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Section	
  1	
  
	
  
Name:	
  	
  John	
  Schnettler	
  
Name	
  of	
  Brew:	
  	
  Equinox	
  Fallout	
  Brown	
  Ale	
  
Style	
  of	
  Brew:	
  	
  American	
  Brown	
  Ale	
  
Brew	
  Date:	
  	
  10/11/2014	
  
Packaging	
  Date:	
  	
  10/29/14	
  
Batch	
  Volume:	
  	
  10	
  Barrels	
  (8.3	
  Barrels	
  Packaged)	
  
Original	
  Gravity:	
  	
  14.8°	
  P	
  
Final	
  Gravity:	
  2.6°	
  P	
  	
  	
  
	
  
Calculation	
  #1	
  –	
  IBU’s	
  
	
  
2	
  lbs	
  Amarillo	
  (75	
  min	
  –	
  First	
  Wort):	
  	
  Estimated	
  Pre-­‐Boil	
  Gravity	
  =	
  13.5	
  Plato	
  
SG	
  =	
  (4*13.5)/1000	
  +	
  1	
  =	
  1.054	
  
(907.2g*0.085*0.23*1000)/	
  1211.33	
  l	
  =	
  14.642	
  IBU	
  
	
  
2	
  lbs	
  Amarillo	
  (20	
  min):	
  	
  Estimated	
  Boil	
  Gravity	
  =	
  14.5	
  Plato	
  
SG	
  =	
  (4*14.5)/1000	
  +	
  1	
  =	
  1.058	
  
(907.2g*0.085*0.128*1000)/	
  1192.4	
  l	
  =	
  8.278	
  IBU	
  
	
  
2	
  lbs	
  Amarillo	
  (15	
  min):	
  	
  Estimated	
  Boil	
  Gravity	
  =	
  14.55	
  Plato	
  
SG	
  =	
  (4*14.55)/1000	
  +	
  1	
  =	
  1.0582	
  
(907.2g*0.085*0.105*1000)/	
  1192.4	
  l	
  =	
  6.790	
  IBU	
  
	
  
2	
  lbs	
  Amarillo	
  (10	
  min):	
  	
  Estimated	
  Boil	
  Gravity	
  =	
  14.6	
  Plato	
  
SG	
  =	
  (4*14.6)/1000	
  +	
  1	
  =	
  1.0584	
  
(907.2g*0.085*0.076*1000)/	
  1192.4	
  l	
  =	
  4.195	
  IBU	
  
	
  
2	
  lbs	
  Amarillo	
  (5	
  min):	
  	
  Estimated	
  Boil	
  Gravity	
  =	
  14.65	
  Plato	
  
SG	
  =	
  (4*14.65)/1000	
  +	
  1	
  =	
  1.0586	
  
(907.2g*0.085*0.042*1000)/	
  1192.4	
  l	
  =	
  2.716	
  IBU	
  
	
  
2	
  lbs	
  Amarillo	
  (0	
  min):	
  	
  No	
  IBU	
  Contribution	
  
	
  
Total	
  IBU’s	
  =	
  36.621	
  IBU	
  
	
  
(International	
  Bitterness	
  Units	
  were	
  calculated	
  using	
  an	
  estimated	
  alpha-­‐acid	
  
content	
  of	
  8.5%	
  for	
  the	
  Amarillo	
  hops,	
  pre-­‐boil	
  and	
  during	
  the	
  boil	
  gravities,	
  hop	
  
utilization	
  percentages,	
  and	
  finally	
  used	
  pre-­‐boil	
  volume	
  for	
  bittering	
  additions	
  and	
  
post-­‐boil	
  volume	
  for	
  aroma	
  additions)	
  
	
  
Calculation	
  #2	
  -­‐	
  %ABV	
  
	
  
(14.8°	
  Plato	
  –	
  2.6°	
  Plato)	
  *	
  0.516	
  =	
  6.295%	
  ABV	
  
	
  	
  
Calculation	
  #3	
  –	
  yeast	
  pitch	
  volume	
  
	
  
(14.8*106	
  mill/ml*1192.4	
  l)/200*106	
  mill/ml	
  =	
  88.2376	
  l	
  or	
  23.31	
  gallons	
  
	
  
(Instructor	
  Jarod	
  Lydon	
  estimated	
  the	
  slurry	
  count)	
  
	
  
Calculation	
  #4	
  –	
  apparent	
  attenuation	
  
	
  
(14.8°	
  Plato	
  –	
  2.6°	
  Plato)/14.8°	
  Plato	
  =	
  82.4%	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
Section	
  2	
  
	
  
Material	
  Bill	
  
	
  
Grist	
  Bill:	
  
	
  
Malt	
   Amount	
  
2	
  Row	
  Malt	
   450	
  lbs	
  
Caramel/Crystal	
  Malt	
  –	
  60L	
   50	
  lbs	
  
Chocolate	
  Malt	
   40	
  lbs	
  
Roasted	
  Barley	
   5	
  lbs	
  
	
  
Boil	
  Ingredients:	
  
	
  
Ingredient	
   Amount	
   Time	
  
Amarillo	
  Hops	
  (First	
  Wort)	
   2	
  lbs	
   75	
  minutes	
  
Amarillo	
  Hops	
   2	
  lbs	
   20	
  minutes	
  
Amarillo	
  Hops	
   2	
  lbs	
   15	
  minutes	
  
Amarillo	
  Hops	
   2	
  lbs	
   10	
  minutes	
  
Whirlfloc	
   30	
  tablets	
   10	
  minutes	
  
Servomyces	
  (Yeast	
  
Nutrient)	
  
1	
  pack	
   10	
  minutes	
  
Amarillo	
  Hops	
   2	
  lbs	
   5	
  minutes	
  
Amarillo	
  Hops	
   2	
  lbs	
   0	
  minutes	
  
	
  
Yeast:	
  	
  American	
  Ale	
  Yeast	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
Equipment:	
  	
  	
  
A.	
  Equinox	
  Brewing	
  System,	
  Premier	
  Stainless	
  Systems	
  CPBH	
  Brew	
  System:	
  
-­‐Hot	
  Liquor	
  Tank/	
  Mash	
  Tun	
  	
  
-­‐Brew	
  Kettle	
  	
  
-­‐In	
  Line	
  Heat	
  Exchanger	
  
-­‐Cylindroconical	
  Fermentation	
  Vessel	
  
B.	
  	
  50-­‐gallon	
  grain	
  drums	
  
C.	
  	
  Grain	
  rake	
  
D.	
  	
  Hoses	
  
E.	
  	
  Food	
  grade	
  tri-­‐clamp	
  hoses	
  
F.	
  	
  	
  Oxygen	
  stone	
  
G.	
  	
  	
  Mash	
  paddle	
  
H.	
  	
  Hot	
  gloves	
  
I.	
  	
  	
  	
  Tool	
  bucket	
  
J.	
  	
  	
  	
  Peroxyacetic	
  acid	
  sanitizer	
  
K.	
  	
  Clean	
  rags	
  
L.	
  	
  	
  Box	
  of	
  extra	
  tri-­‐clamps	
  and	
  gaskets	
  
M.	
  	
  pH	
  meter	
  
N.	
  	
  Hydrometer	
  
O.	
  	
  Deionized	
  water	
  bottle	
  
P.	
  	
  Hose	
  sprayer	
  nozzle	
  
Q.	
  	
  	
  PBW	
  cleaning	
  solution	
  
R.	
  	
  Serving	
  vessel	
  
S.	
  	
  	
  Corny	
  Keg	
  
T.	
  	
  Biofine	
  
U.	
  	
  Hopback	
  
V.	
  	
  Grain	
  Mill	
  
W.	
  	
  Digital	
  Scale	
  
	
  
	
  
	
  
Procedure	
  
	
  
Pre-­‐Boil:	
  
	
  
10/11/2014	
  
1. We	
  arrived	
  at	
  Equinox	
  with	
  all	
  of	
  our	
  ingredients	
  provided.	
  	
  Our	
  base	
  
malt	
  was	
  held	
  in	
  a	
  silo	
  outdoors,	
  which	
  was	
  transported	
  by	
  a	
  flex	
  agar	
  to	
  
the	
  grain	
  mill	
  to	
  crush	
  all	
  grains	
  into	
  grist,	
  leaving	
  the	
  husk	
  still	
  intact.	
  	
  
After	
  milling,	
  the	
  grain	
  is	
  then	
  carried	
  by	
  another	
  flex	
  agar	
  to	
  the	
  mash	
  
tun.	
  	
  In	
  addition,	
  we	
  also	
  added	
  our	
  specialty	
  malts	
  directly	
  to	
  the	
  grain	
  
mill	
  to	
  be	
  properly	
  crushed	
  and	
  transported	
  to	
  the	
  mash	
  tun	
  via	
  a	
  flex	
  
agar.	
  
-­‐	
  2-­‐row	
  served	
  as	
  our	
  base	
  malt	
  and	
  primary	
  source	
  of	
  fermentable	
  
sugar.	
  	
  Roasted	
  barley	
  was	
  used	
  to	
  provide	
  a	
  small	
  amount	
  of	
  fermentable	
  
sugar,	
  contribute	
  roast	
  and	
  coffee	
  flavors,	
  and	
  lend	
  a	
  darker	
  color.	
  	
  
Chocolate	
  malt	
  was	
  also	
  used	
  in	
  order	
  to	
  provide	
  a	
  small	
  amount	
  of	
  
fermentable	
  sugar,	
  contribute	
  chocolate	
  and	
  nutty	
  flavors,	
  and	
  lend	
  a	
  
darker	
  color.	
  	
  Finally,	
  we	
  used	
  Caramel/Crystal	
  malt	
  (60L)	
  to	
  contribute	
  
body	
  and	
  color	
  to	
  the	
  beer	
  as	
  well	
  as	
  aid	
  in	
  head	
  retention.	
  	
  The	
  
culmination	
  of	
  these	
  darker	
  grains	
  helped	
  to	
  buffer	
  down	
  the	
  pH	
  towards	
  
an	
  optimal	
  mash	
  temperature.	
  	
  The	
  grains	
  we	
  utilized	
  had	
  already	
  been	
  
steeped,	
  germinated,	
  and	
  kilned	
  in	
  order	
  to	
  develop	
  and	
  preserve	
  
enzymes	
  for	
  the	
  mash	
  as	
  well	
  as	
  break	
  down	
  grain	
  cell	
  walls	
  in	
  order	
  to	
  
be	
  modified	
  for	
  an	
  effective	
  mash	
  and	
  fermentation.	
  	
  	
  In	
  addition,	
  the	
  
kilning	
  process	
  affects	
  the	
  color	
  and	
  flavor	
  of	
  the	
  grains.	
  	
  These	
  processes	
  
constitute	
  the	
  malting	
  of	
  the	
  grain.	
  
-­‐We	
  used	
  whole	
  cone	
  Amarillo	
  hops	
  for	
  bittering	
  and	
  aroma	
  due	
  to	
  the	
  
fact	
  they	
  have	
  a	
  high	
  alpha-­‐acid	
  content	
  as	
  well	
  as	
  contribute	
  citrus,	
  floral,	
  
and	
  grapefruit	
  aromas	
  and	
  flavors.	
  	
  Alpha	
  acids	
  are	
  a	
  soft	
  resin	
  found	
  in	
  
hops	
  that	
  add	
  bitterness	
  to	
  the	
  beer	
  when	
  isomerized	
  during	
  the	
  boil.	
  	
  
Isomerization	
  is	
  the	
  process	
  in	
  which	
  the	
  original	
  alpha-­‐acid	
  6-­‐carbon	
  
ring	
  becomes	
  a	
  5-­‐carbon	
  ring	
  under	
  high	
  temperatures	
  making	
  the	
  alpha	
  
acid	
  soluble	
  in	
  water	
  and	
  perceivably	
  bitter.	
  
-­‐Grain	
  is	
  milled	
  in	
  order	
  to	
  reduce	
  and	
  control	
  the	
  size	
  of	
  the	
  grain	
  and	
  
break	
  up	
  the	
  endosperm	
  in	
  order	
  to	
  make	
  convertible	
  starches	
  more	
  
available	
  at	
  the	
  desired	
  extract	
  yield.	
  	
  	
  
	
  
10/11/2014	
  
1. Collin	
  and	
  Jerod	
  cleaned	
  all	
  Equinox	
  brewing	
  system	
  equipment	
  (using	
  
Clean-­‐In-­‐Place	
  technology)	
  and	
  materials	
  thoroughly	
  using	
  PBW	
  (2	
  oz.	
  
per	
  gallon	
  of	
  hot	
  water)	
  and	
  rinsed	
  with	
  hot	
  water	
  prior	
  to	
  our	
  arrival.	
  
	
  	
  -­‐Cleaning	
  is	
  vital	
  in	
  removing	
  soil	
  and	
  a	
  majority	
  of	
  existing	
  
microorganisms	
  from	
  the	
  equipment	
  that	
  can	
  cause	
  inactivation	
  of	
  
sanitizer	
  and	
  potential	
  contamination	
  of	
  the	
  final	
  product.	
  
2. Collin	
  and	
  Jerod	
  also	
  sanitized	
  all	
  equipment	
  (using	
  Sanitize-­‐In-­‐Place	
  
technology)	
  and	
  materials	
  thoroughly	
  using	
  peroxyacetic	
  acid	
  (6oz	
  per	
  10	
  
gallons	
  of	
  water)	
  and	
  cold	
  water	
  prior	
  to	
  our	
  arrival.	
  
	
  	
  -­‐Peroxyacetic	
  acid	
  is	
  an	
  acid	
  sanitizer	
  containing	
  surface-­‐active	
  agents	
  
that	
  disrupt	
  microbial	
  surfaces	
  and	
  also	
  volatizes.	
  
3. We	
  started	
  by	
  heating	
  the	
  filled	
  hot	
  liquor	
  tank	
  for	
  our	
  sparge	
  volume	
  of	
  6	
  
barrels	
  and	
  also	
  4.5	
  barrels	
  of	
  strike	
  water	
  to	
  be	
  added	
  to	
  the	
  mash	
  tun.	
  	
  
In	
  addition,	
  we	
  began	
  heating	
  water	
  in	
  the	
  kettle	
  to	
  be	
  used	
  in	
  sterilizing	
  
the	
  plate	
  chiller.	
  
4. Once	
  the	
  hot	
  liquor	
  tank	
  water	
  reached	
  172°F,	
  we	
  added	
  4.5	
  barrels	
  of	
  
strike	
  water	
  to	
  our	
  mash	
  tun	
  already	
  containing	
  the	
  culmination	
  of	
  our	
  
pale,	
  chocolate,	
  and	
  crystal	
  malts	
  as	
  well	
  as	
  roasted	
  barley	
  to	
  the	
  mash	
  
tun	
  at	
  a	
  steady	
  rate	
  while	
  simultaneously	
  stirring	
  to	
  avoid	
  clumping	
  of	
  
grain,	
  which	
  can	
  decrease	
  the	
  efficiency	
  of	
  the	
  mash	
  in	
  converting	
  
starches	
  to	
  fermentable	
  sugars.	
  	
  	
  	
  
-­‐We	
  utilized	
  an	
  infusion	
  mash	
  consisting	
  of	
  an	
  insulated	
  mash	
  tun	
  and	
  
stainless	
  steel	
  false	
  bottom	
  acting	
  as	
  a	
  lauter	
  tun	
  allowing	
  for	
  effective	
  
separation	
  of	
  wort	
  from	
  grain	
  that	
  is	
  unstirred	
  and	
  facilitates	
  starch	
  
conversion	
  at	
  a	
  single	
  temperature.	
  	
  	
  
	
  	
  	
   	
  	
  -­‐The	
  mash-­‐in	
  began	
  at	
  9:10am	
  and	
  was	
  considered	
  fully	
  mashed-­‐in	
  at	
  
9:30am.	
  The	
  strike	
  water	
  brought	
  the	
  mash	
  to	
  151°F	
  for	
  one	
  hour	
  which	
  
we	
  closely	
  monitored.	
  	
  At	
  this	
  temperature,	
  although	
  both	
  alpha	
  and	
  beta	
  
amylase	
  enzymes	
  were	
  functioning,	
  beta-­‐amylase	
  was	
  predominant	
  thus	
  
creating	
  chemical	
  conditions	
  lending	
  to	
  a	
  lower	
  extract	
  yield	
  but	
  higher	
  
fermentability.	
  	
  This	
  higher	
  fermentability	
  will	
  occur	
  based	
  on	
  beta-­‐
amylase’s	
  creation	
  of	
  maltose	
  which	
  is	
  a	
  less	
  complex	
  carbohydrate	
  and	
  
thus	
  easier	
  to	
  break	
  down	
  during	
  fermentation.	
  	
  This	
  lower	
  mash	
  temp	
  
will	
  ultimately	
  contribute	
  to	
  a	
  drier	
  beer.	
  
	
  	
  	
   	
  	
  -­‐We	
  did	
  not	
  take	
  a	
  pH	
  reading	
  during	
  the	
  mash,	
  however	
  a	
  mash	
  
typically	
  regulates	
  its	
  own	
  pH	
  for	
  amylase	
  to	
  effectively	
  function.	
  
	
  	
   	
  	
  -­‐Although	
  conversion	
  typically	
  occurs	
  in	
  the	
  first	
  thirty	
  minutes	
  or	
  less	
  
of	
  the	
  mash,	
  it	
  wouldn’t	
  have	
  been	
  a	
  bad	
  idea	
  to	
  do	
  an	
  iodine	
  test	
  to	
  
double	
  check	
  and	
  make	
  sure	
  conversion	
  had	
  occurred	
  given	
  our	
  lack	
  of	
  
pH	
  measurement.	
  
5.	
  	
  We	
  started	
  our	
  vorlauf	
  at	
  10:15am	
  and	
  allowed	
  for	
  fifteen	
  minutes	
  of	
  
recirculation.	
  
	
   	
  	
  -­‐Vorlauf	
  is	
  the	
  German	
  word	
  for	
  “pre-­‐run”	
  and	
  is	
  utilized	
  in	
  brewing	
  to	
  
draw	
  off	
  and	
  recirculate	
  the	
  wort	
  throughout	
  the	
  mash	
  tun	
  without	
  
running	
  off	
  into	
  the	
  boil	
  kettle.	
  
	
   	
  	
  -­‐Vorlauf	
  is	
  important	
  in	
  clarifying	
  the	
  wort	
  being	
  drawn	
  out	
  of	
  the	
  mash	
  
tun	
  and	
  establishing	
  a	
  good	
  filtration	
  system	
  through	
  the	
  grain	
  bed.	
  	
  The	
  
first	
  runnings	
  will	
  appear	
  hazy	
  and	
  contain	
  some	
  milled	
  grain	
  particles	
  
but	
  will	
  eventually	
  clear	
  up.	
  	
  Due	
  to	
  our	
  potentially	
  too	
  fine	
  ground	
  
roasted	
  barley	
  and	
  chocolate	
  malts,	
  we	
  wanted	
  a	
  slow	
  vorlauf	
  in	
  order	
  to	
  
avoid	
  pulling	
  the	
  grain	
  bed	
  down	
  to	
  the	
  filter	
  and	
  clogging	
  the	
  false	
  
bottom.	
  	
  
7.	
  	
  After	
  clarifying	
  our	
  wort,	
  we	
  began	
  our	
  runoff	
  into	
  the	
  boil	
  kettle	
  at	
  
10:30am.	
  During	
  runoff,	
  we	
  added	
  2	
  lbs	
  of	
  first	
  wort	
  Amarillo	
  whole	
  
flower	
  hops	
  to	
  the	
  boil	
  kettle	
  in	
  order	
  to	
  be	
  boiled	
  the	
  full	
  75	
  minutes	
  as	
  
well	
  as	
  potentially	
  impart	
  some	
  hop	
  flavor	
  to	
  our	
  wort	
  prior	
  to	
  boiling.	
  	
  At	
  
10:34am	
  we	
  began	
  sparging	
  using	
  6	
  barrels	
  of	
  water	
  at	
  172°F.	
  	
  During	
  the	
  
sparge,	
  we	
  made	
  sure	
  to	
  adjust	
  the	
  sparge	
  pump	
  so	
  that	
  the	
  liquid	
  level	
  
was	
  about	
  2-­‐3	
  cm	
  above	
  the	
  grain	
  level	
  in	
  order	
  to	
  ensure	
  a	
  steady	
  rinsing	
  
of	
  the	
  grains.	
  	
  While	
  we	
  ran	
  off	
  into	
  the	
  kettle,	
  we	
  simultaneously	
  heated	
  
the	
  boil	
  kettle	
  and	
  held	
  at	
  a	
  temperature	
  just	
  before	
  boiling	
  in	
  order	
  to	
  be	
  
able	
  to	
  begin	
  boiling	
  quickly	
  after	
  finishing	
  runoff.	
  
	
   	
  	
  -­‐The	
  technical	
  term	
  for	
  the	
  runoff	
  is	
  lautering,	
  where	
  wort	
  is	
  separated	
  
from	
  grains.	
  	
  Our	
  mash	
  tun	
  also	
  acted	
  as	
  a	
  lauter	
  tun	
  due	
  to	
  the	
  fact	
  that	
  it	
  
has	
  a	
  false	
  bottom	
  that	
  effectively	
  filters	
  the	
  wort	
  without	
  letting	
  the	
  
grain	
  drain	
  off	
  in	
  to	
  the	
  kettle.	
  
	
   	
  	
  -­‐We	
  sparged	
  in	
  order	
  to	
  give	
  the	
  grain	
  an	
  extra	
  rinse	
  to	
  drain	
  off	
  any	
  
residual	
  fermentable	
  sugars	
  on	
  the	
  grain	
  bed	
  into	
  our	
  boil	
  kettle.	
  	
  To	
  
avoid	
  extracting	
  tannins	
  from	
  the	
  grains,	
  we	
  sparged	
  using	
  water	
  at	
  a	
  
temperature	
  that	
  wasn’t	
  too	
  hot,	
  avoided	
  over	
  sparging,	
  and	
  avoided	
  
sparging	
  above	
  a	
  pH	
  of	
  5.8.	
  
	
   	
  
8.	
  	
  	
  We	
  finished	
  sparging	
  sometime	
  during	
  our	
  lunch	
  break	
  and	
  ended	
  our	
  
runoff	
  into	
  the	
  boil	
  kettle	
  at	
  12:15pm.	
  	
  Our	
  pre-­‐boil	
  volume	
  was	
  roughly	
  
10.5	
  barrels	
  or	
  320	
  gallons.	
  
	
   	
  	
  -­‐We	
  monitor	
  the	
  gravity	
  of	
  our	
  wort	
  throughout	
  the	
  brewing	
  process	
  
because	
  gravity	
  is	
  a	
  measurement	
  of	
  sugar	
  concentration	
  in	
  wort/beer,	
  
which	
  allows	
  us	
  to	
  know	
  the	
  fermentation	
  capacity	
  of	
  our	
  brew	
  and	
  how	
  
much	
  alcohol	
  will	
  ultimately	
  be	
  produced	
  during	
  fermentation.	
  	
  However,	
  
it	
  is	
  important	
  to	
  note	
  that	
  refractometers	
  are	
  fairly	
  inaccurate	
  when	
  
measuring	
  alcohol	
  and	
  typically	
  shouldn’t	
  be	
  used	
  for	
  beer.	
  	
  Therefore,	
  we	
  
chose	
  not	
  to	
  use	
  a	
  refractometer	
  to	
  obtain	
  a	
  rough	
  estimate	
  of	
  numerous	
  
gravity	
  measurements.	
  
	
  
The	
  Boil:	
  
	
  
10/11/2014	
  (Same	
  day)	
  
1. We	
  began	
  our	
  boil	
  time	
  at	
  12:15	
  pm	
  after	
  achieving	
  a	
  rolling	
  boil.	
  	
  At	
  this	
  
time,	
  the	
  whole	
  flower	
  Amarillo	
  hops	
  that	
  we	
  had	
  added	
  for	
  a	
  first	
  wort	
  
addition	
  began	
  to	
  isomerize.	
  
	
  	
  -­‐We	
  boil	
  our	
  wort	
  (unfermented	
  beer)	
  in	
  order	
  to	
  evaporate	
  water	
  thus	
  
concentrating	
  the	
  wort’s	
  fermentable	
  sugars,	
  boil	
  off	
  any	
  volatiles	
  such	
  as	
  
dimethyl	
  sulfide,	
  and	
  extract	
  bitterness	
  from	
  hops	
  via	
  isomerization.	
  	
  In	
  
addition,	
  boiling	
  wort	
  is	
  essential	
  in	
  stabilizing	
  the	
  wort	
  by	
  denaturing	
  
amylase	
  enzymes	
  from	
  mash	
  as	
  well	
  as	
  killing	
  any	
  microorganisms	
  
present	
  in	
  the	
  beer.	
  	
  Furthermore,	
  boiling	
  helps	
  to	
  react	
  simple	
  sugars	
  
with	
  amino	
  acids	
  to	
  form	
  melanoidins	
  and	
  flavor	
  compounds.	
  	
  Finally,	
  
boiling	
  denatures	
  proteins,	
  causing	
  the	
  formation	
  and	
  precipitation	
  of	
  
undesirable	
  protein-­‐polyphenol	
  complexes.	
  	
  
	
  	
  -­‐Hops	
  added	
  toward	
  the	
  beginning	
  of	
  the	
  boil	
  are	
  known	
  as	
  bittering	
  
hops	
  because	
  the	
  heat	
  of	
  the	
  boil	
  isomerizes	
  (changes	
  the	
  6-­‐carbon	
  ring	
  
to	
  a	
  5-­‐carbon	
  ring)	
  alpha-­‐acids	
  making	
  them	
  soluble	
  in	
  water	
  and	
  bitter	
  
when	
  they	
  were	
  previously	
  insoluble	
  in	
  water	
  prior	
  to	
  boiling.	
  	
  These	
  
alpha-­‐acids	
  are	
  soft	
  resins	
  known	
  as	
  humulones	
  found	
  within	
  the	
  lupulin	
  
glands	
  of	
  hops	
  along	
  with	
  essential	
  oils.	
  
	
  	
  -­‐When	
  adding	
  hops	
  to	
  the	
  boil	
  it	
  is	
  important	
  to	
  monitor	
  the	
  level	
  of	
  
liquid	
  in	
  the	
  kettle	
  in	
  order	
  to	
  avoid	
  a	
  boil	
  over.	
  	
  When	
  adding	
  ingredients	
  
to	
  the	
  Sabco	
  system	
  we	
  turned	
  off	
  the	
  burner	
  to	
  avoid	
  boil	
  over	
  and	
  also	
  
kept	
  a	
  hose	
  nearby	
  to	
  spray	
  any	
  erupting	
  wort.	
  
2. At	
  12:35,	
  we	
  utilized	
  Sanitize-­‐In-­‐Place	
  systems	
  to	
  sanitize	
  our	
  
fermentation	
  vessel	
  that	
  had	
  already	
  been	
  cleaned	
  in	
  place	
  the	
  previous	
  
day.	
  	
  After	
  fully	
  sanitizing	
  the	
  fermentation	
  vessel,	
  we	
  back-­‐flushed	
  the	
  
sanitizer	
  and	
  pushed	
  it	
  through	
  our	
  heat	
  exchanger	
  in	
  order	
  to	
  fully	
  
sanitize	
  the	
  piece	
  of	
  equipment.	
  	
  	
  
 	
  -­‐Due	
  to	
  the	
  fact	
  that	
  the	
  wort	
  will	
  be	
  passing	
  through	
  the	
  heat	
  exchanger	
  
and	
  into	
  the	
  fermentation	
  vessel	
  following	
  boiling,	
  it	
  is	
  imperative	
  that	
  
these	
  pieces	
  of	
  equipment	
  are	
  completely	
  clean	
  and	
  sanitized	
  so	
  as	
  to	
  
avoid	
  microbial	
  contamination	
  of	
  our	
  beer.	
  
3. At	
  12:55	
  pm,	
  we	
  transferred	
  27	
  gallons	
  of	
  house	
  propagated,	
  American	
  
ale	
  yeast	
  from	
  the	
  mini	
  cylindroconical	
  vessel	
  to	
  the	
  primary	
  
fermentation	
  vessel	
  using	
  pressure	
  from	
  carbon	
  dioxide.	
  
-­‐Collin	
  and	
  Jerod	
  were	
  confident	
  that	
  the	
  heat	
  exchanger	
  would	
  function	
  
properly	
  and	
  cooled	
  wort	
  could	
  be	
  added	
  directly	
  to	
  the	
  yeast-­‐filled	
  
fermenter.	
  	
  
	
  	
  -­‐Collin	
  and	
  Jerod	
  estimated	
  a	
  yeast	
  slurry	
  count	
  of	
  200*106	
  mill/ml	
  and	
  a	
  
pitch	
  rate	
  of	
  12*106	
  cells/ml	
  leading	
  them	
  to	
  calculate	
  a	
  volume	
  of	
  27	
  
gallons	
  of	
  yeast	
  to	
  be	
  pitched.	
  
4. At	
  1:10pm,	
  we	
  added	
  2	
  lbs	
  of	
  Amarillo	
  whole	
  flower	
  hops	
  to	
  our	
  kettle,	
  
which	
  had	
  twenty	
  minutes	
  of	
  boiling	
  remaining.	
  	
  Amarillo	
  hops	
  are	
  
known	
  to	
  impart	
  citrus,	
  floral,	
  and	
  grapefruit	
  aromas	
  and	
  flavors	
  in	
  the	
  
finished	
  beer.	
  
5. At	
  1:15	
  pm,	
  we	
  added	
  another	
  2	
  lbs	
  of	
  Amarillo	
  whole	
  flower	
  hops	
  for	
  the	
  
same	
  purpose.	
  
6. At	
  1:20	
  pm,	
  we	
  added	
  another	
  2	
  lbs	
  of	
  Amarillo	
  whole	
  flower	
  hops	
  for	
  the	
  
same	
  purpose.	
  	
  In	
  addition,	
  we	
  added	
  1	
  pack	
  of	
  Servomyces	
  yeast	
  to	
  
nourish	
  the	
  yeast	
  throughout	
  the	
  stages	
  of	
  fermentation.	
  	
  Finally,	
  we	
  
added	
  30	
  tablets	
  of	
  Whirlfloc	
  in	
  order	
  to	
  help	
  clarify	
  the	
  wort	
  by	
  
precipitating	
  proteins	
  and	
  beta	
  glucans	
  that	
  contribute	
  haze	
  in	
  the	
  final	
  
product.	
  
7. At	
  1:25	
  pm,	
  we	
  added	
  another	
  2	
  lbs	
  of	
  Amarillo	
  whole	
  flower	
  hops	
  for	
  the	
  
same	
  purpose.	
  
8. At	
  1:30pm	
  we	
  turned	
  off	
  the	
  heat	
  ending	
  the	
  boil,	
  a	
  process	
  known	
  as	
  
flameout.	
  	
  Although	
  cleaning	
  and	
  sanitation	
  are	
  emphasized	
  throughout	
  
the	
  entire	
  brewing	
  process,	
  it	
  is	
  absolutely	
  vital	
  that	
  anything	
  that	
  comes	
  
in	
  contact	
  with	
  the	
  wort	
  from	
  this	
  point	
  forward	
  is	
  clean	
  and	
  sanitized	
  to	
  
avoid	
  contamination	
  due	
  to	
  the	
  fact	
  that	
  the	
  major	
  antibacterial	
  step,	
  the	
  
boil,	
  is	
  finished.	
  	
  At	
  this	
  time,	
  we	
  also	
  made	
  one	
  last	
  2	
  lb	
  Amarillo	
  whole	
  
flower	
  hop	
  addition	
  for	
  strictly	
  aroma	
  and	
  flavoring	
  purposes	
  using	
  the	
  
hopback	
  equipment,	
  at	
  that	
  point	
  hop	
  alpha-­‐acids	
  were	
  not	
  being	
  
isomerized.	
  	
  The	
  hopback	
  attached	
  to	
  the	
  boil	
  kettle	
  and	
  then	
  to	
  the	
  heat	
  
exchanger	
  in	
  order	
  to	
  not	
  only	
  provide	
  aroma	
  and	
  flavor,	
  but	
  also	
  filter	
  
out	
  any	
  whole	
  cone	
  hops	
  or	
  trub.	
  
	
  
(At	
  some	
  point	
  during	
  the	
  boil,	
  we	
  opened	
  up	
  the	
  mash	
  tun	
  and	
  raked	
  all	
  spent	
  grain	
  
into	
  drums	
  to	
  be	
  reused	
  by	
  a	
  local	
  farmer)	
  
	
  
Post	
  Boil:	
  
	
  
10/11/2014	
  (Same	
  day)	
  
1. After	
  turning	
  the	
  kettle	
  burner	
  off	
  at	
  1:30pm,	
  we	
  simultaneously	
  initiated	
  
the	
  whirlpool	
  and	
  prepared	
  the	
  heat	
  exchanger	
  for	
  knockout	
  at	
  1:35pm.	
  	
  
To	
  initiate	
  the	
  whirlpool,	
  we	
  used	
  a	
  clean	
  and	
  sanitized	
  paddle	
  to	
  
vigorously	
  stir	
  the	
  wort	
  into	
  centrifugal	
  motion.	
  
-­‐The	
  purpose	
  of	
  the	
  whirlpool	
  is	
  to	
  collect	
  hop	
  residues	
  and	
  hot	
  break	
  
(denatured	
  protein-­‐polyphenol	
  complexes)	
  at	
  the	
  center	
  and	
  bottom	
  of	
  
the	
  kettle	
  via	
  centrifugal	
  motion.	
  	
  This	
  helps	
  to	
  clarify	
  the	
  wort	
  and	
  make	
  
it	
  easier	
  to	
  separate	
  from	
  the	
  trub	
  settled	
  at	
  the	
  bottom	
  of	
  the	
  kettle.	
  
2. During	
  the	
  whirlpool,	
  we	
  prepared	
  for	
  knockout	
  (running	
  off	
  wort	
  into	
  
the	
  fermenter)	
  by	
  connecting	
  the	
  heat	
  exchanger	
  to	
  both	
  the	
  hopback	
  
(attached	
  to	
  the	
  boil	
  kettler)	
  and	
  fermenter	
  using	
  tri-­‐clamps.	
  	
  We	
  did	
  not	
  
need	
  to	
  use	
  an	
  oxygen	
  tank	
  due	
  to	
  the	
  fact	
  the	
  heat	
  exchanger	
  already	
  
contained	
  an	
  oxygen	
  stone.	
  	
  In	
  addition,	
  we	
  measured	
  the	
  post-­‐boil	
  
volume	
  to	
  be	
  10	
  barrels	
  as	
  estimated	
  by	
  Jerod.	
  
3. After	
  connecting	
  a	
  clean	
  and	
  sanitized	
  tri-­‐clamp	
  hose	
  from	
  the	
  kettle	
  to	
  
the	
  hopback,	
  a	
  clean	
  and	
  sanitized	
  tri-­‐clamp	
  hose	
  to	
  the	
  heat	
  exchanger	
  
and	
  a	
  clean,	
  and	
  sanitized	
  tri-­‐clamp	
  hose	
  from	
  the	
  heat	
  exchanger	
  to	
  the	
  
fermenter,	
  we	
  turned	
  on	
  the	
  water	
  supply	
  facilitating	
  cooling	
  of	
  the	
  wort	
  
as	
  it	
  passed	
  through	
  the	
  chiller	
  into	
  the	
  fermenter.	
  	
  In	
  addition,	
  the	
  
provided	
  oxygen	
  stone	
  in	
  the	
  heat	
  exchanger	
  was	
  used	
  to	
  facilitate	
  a	
  
steady	
  bubbling	
  and	
  aeration	
  of	
  the	
  wort.	
  	
  We	
  began	
  knockout	
  at	
  1:45pm	
  
by	
  opening	
  the	
  kettle	
  and	
  allowing	
  the	
  wort	
  to	
  pass	
  through	
  the	
  chiller	
  
system	
  and	
  into	
  the	
  fermenter.	
  	
  This	
  process	
  occurred	
  at	
  a	
  temperature	
  of	
  
72°F.	
  
-­‐Cooling	
  the	
  wort	
  to	
  approximately	
  65-­‐70°	
  F	
  is	
  absolutely	
  vital	
  in	
  order	
  to	
  
provide	
  the	
  ale	
  yeast	
  we	
  were	
  using	
  the	
  proper	
  fermentation	
  
environment	
  in	
  terms	
  of	
  temperature.	
  	
  Both	
  ale	
  and	
  lager	
  yeast	
  will	
  not	
  
survive	
  if	
  pitched	
  into	
  non-­‐cooled	
  wort.	
  	
  The	
  wort	
  should	
  be	
  rapidly	
  
cooled	
  in	
  order	
  to	
  avoid	
  oxidation,	
  formation	
  of	
  sulfur	
  compounds,	
  
contamination,	
  and	
  also	
  in	
  order	
  to	
  form	
  the	
  cold	
  break	
  (trub	
  settled	
  out	
  
after	
  cooling).	
  
	
  	
  -­‐We	
  use	
  oxygen	
  to	
  aerate	
  the	
  wort	
  due	
  to	
  the	
  fact	
  that	
  yeast	
  need	
  oxygen	
  
in	
  the	
  lag	
  and	
  growth	
  phase	
  in	
  order	
  to	
  produce	
  lipids	
  and	
  ultimately	
  
grow	
  and	
  multiply.	
  	
  This	
  ensures	
  a	
  healthy,	
  steady	
  fermentation	
  in	
  which	
  
the	
  yeast	
  aren’t	
  over-­‐stressed.	
  
4. At	
  2:25pm,	
  we	
  finished	
  knockout	
  into	
  the	
  keg-­‐style	
  fermenter.	
  	
  The	
  rapid	
  
chilling	
  of	
  the	
  wort	
  formed	
  a	
  cold	
  break	
  (trub	
  settled	
  out	
  after	
  cooling),	
  
which	
  we	
  drained	
  into	
  a	
  slop	
  bucket	
  and	
  discarded.	
  	
  	
  
	
  	
  -­‐Our	
  fermenter	
  after	
  cooling	
  was	
  about	
  68°F	
  and	
  therefore	
  a	
  favorable	
  
fermentation	
  temperature.	
  
5. As	
  part	
  of	
  the	
  class	
  handled	
  transferring	
  between	
  fermenters,	
  we	
  also	
  
began	
  cleaning	
  Equinox’s	
  brewing	
  system	
  and	
  its	
  components.	
  	
  
	
  	
  -­‐To	
  clean	
  the	
  brew	
  system,	
  we	
  first	
  emptied	
  the	
  mash	
  tun	
  (as	
  previously	
  
mentioned)	
  as	
  well	
  as	
  we	
  cleaned	
  drained	
  the	
  trub	
  and	
  leftover	
  hops	
  from	
  
the	
  boil	
  kettle.	
  	
  Collin	
  and	
  Jerod	
  handled	
  CIP	
  of	
  the	
  brewing	
  system	
  the	
  
next	
  day.	
  
6. While	
  we	
  were	
  knocking	
  out,	
  we	
  took	
  a	
  gravity	
  reading	
  using	
  a	
  
hydrometer	
  and	
  measured	
  a	
  gravity	
  of	
  14.8°	
  Plato.	
  	
  Although	
  we	
  pitched	
  
the	
  yeast	
  into	
  the	
  empty	
  fermenter	
  at	
  12:55	
  pm,	
  wort	
  didn’t	
  enter	
  the	
  
fermenter	
  until	
  1:45	
  pm.	
  
-­‐As	
  previously	
  mentioned,	
  cleaning	
  and	
  sanitation	
  is	
  vital	
  post	
  boil	
  
therefore	
  we	
  exercised	
  extreme	
  caution	
  when	
  handling	
  our	
  cooled	
  wort.	
  
	
  	
  -­‐We	
  use	
  a	
  blow	
  off	
  hose	
  to	
  allow	
  carbon	
  dioxide,	
  a	
  product	
  of	
  
fermentation,	
  to	
  escape	
  our	
  fermentation	
  vessel.	
  	
  We	
  placed	
  the	
  blow	
  off	
  
in	
  sanitizer	
  to	
  avoid	
  contamination	
  and	
  oxygen	
  from	
  entering	
  the	
  
fermenter.	
  
	
  	
  -­‐Our	
  estimated	
  batch	
  volume	
  was	
  8.5	
  barrels	
  according	
  to	
  Collin	
  and	
  
Jerod’s	
  estimations	
  whereas	
  our	
  actual	
  batch	
  volume	
  in	
  the	
  fermenter	
  
was	
  10	
  barrels.	
  	
  In	
  addition,	
  our	
  actual	
  original	
  gravity	
  was	
  14.8°	
  Plato,	
  
which	
  was	
  much	
  higher	
  than	
  our	
  estimated	
  original	
  gravity	
  of	
  1.055	
  or	
  
roughly	
  13.5°	
  Plato.	
  	
  It	
  seems	
  these	
  discrepancies	
  likely	
  occurred	
  due	
  to	
  
somewhat	
  inaccurate	
  estimations	
  of	
  volumes	
  throughout	
  brewing	
  as	
  well	
  
as	
  neglect	
  of	
  measuring	
  gravity	
  throughout	
  the	
  process	
  and	
  responding	
  
accordingly.	
  
7. After	
  finishing	
  knockout	
  into	
  the	
  cylindroconical	
  fermenter	
  already	
  
containing	
  yeast,	
  the	
  fermenter	
  remained	
  at	
  nearly	
  room	
  temperature	
  
until	
  it	
  was	
  time	
  to	
  cold	
  crash.	
  
-­‐During	
  storage	
  at	
  room	
  temperature,	
  the	
  yeast	
  we	
  pitched	
  were	
  in	
  an	
  
anaerobic	
  environment	
  which	
  facilitated	
  the	
  metabolism	
  of	
  sugars	
  
(primarily	
  maltose	
  and	
  maltotriose)	
  by	
  yeast	
  creating	
  ethanol,	
  carbon	
  
dioxide,	
  and	
  various	
  other	
  flavor	
  components/byproducts	
  in	
  a	
  process	
  
known	
  as	
  fermentation.	
  
	
  
10/23/2014	
  
1.	
  	
  	
  At	
  this	
  time,	
  we	
  allowed	
  for	
  a	
  diacetyl	
  rest	
  at	
  68°F.	
  	
  Diacetyl	
  is	
  a	
  natural	
  	
  	
  	
  	
  	
  	
  	
  	
  	
  
by	
  product	
  of	
  fermentation	
  known	
  for	
  imparting	
  buttery	
  or	
  butterscotch	
  
flavors	
  in	
  the	
  final	
  product.	
  	
  By	
  allowing	
  the	
  fermented	
  beer	
  to	
  rest	
  at	
  this	
  
temperature,	
  we	
  removed	
  diacetyl,	
  a	
  common	
  off	
  flavor	
  in	
  finished	
  beers.	
  
	
  
10/26/2014	
  
1. We	
  cold	
  crashed	
  our	
  beer	
  at	
  this	
  time	
  in	
  order	
  to	
  ultimately	
  clarify	
  our	
  
beer.	
  	
  This	
  occurs	
  due	
  to	
  the	
  fact	
  that	
  when	
  cold	
  crashed	
  at	
  near	
  freezing	
  
temperatures,	
  yeast	
  and	
  other	
  sediments	
  undesirable	
  in	
  the	
  final	
  product	
  
will	
  group	
  together	
  (flocculate)	
  and	
  fall	
  to	
  the	
  bottom	
  of	
  the	
  vessel.	
  	
  Our	
  
fermentation	
  occurred	
  at	
  68°	
  F	
  and	
  we	
  cold	
  crashed	
  at	
  38°	
  F.	
  	
  
	
  
10/27/2014	
  
1. At	
  this	
  time,	
  we	
  added	
  finings	
  to	
  our	
  beer	
  which	
  had	
  measured	
  out	
  to	
  a	
  
final	
  gravity	
  of	
  2.6°P.	
  	
  In	
  order	
  to	
  add	
  finings	
  to	
  our	
  beer,	
  we	
  first	
  purged	
  
our	
  fining	
  brink,	
  a	
  small	
  corny	
  keg,	
  in	
  order	
  to	
  make	
  sure	
  we	
  weren’t	
  
adding	
  oxygen	
  to	
  our	
  beer,	
  which	
  can	
  cause	
  off	
  flavors.	
  
2. Next,	
  we	
  added	
  350	
  ml	
  of	
  Biofine	
  fining	
  brink	
  to	
  our	
  cylindroconical	
  and	
  	
  
 
Packaging:	
  	
  
	
  
10/17/2014	
  
1. We	
  ended	
  cold	
  crash	
  on	
  this	
  day.	
  	
  To	
  prepare	
  for	
  racking	
  off	
  into	
  our	
  
serving	
  vessel	
  we	
  utilized	
  a	
  CIP	
  loop	
  to	
  first	
  clean	
  the	
  vessel	
  using	
  10	
  
gallons	
  of	
  90-­‐100°	
  F	
  water	
  and	
  20	
  oz.	
  of	
  acid	
  cleaner.	
  
2. Next,	
  we	
  utilized	
  a	
  SIP	
  loop	
  to	
  sanitize	
  the	
  vessel	
  using	
  10	
  gallons	
  of	
  cold	
  
water	
  and	
  6	
  oz.	
  of	
  peroxyacetic	
  acid.	
  	
  	
  
3. Next,	
  we	
  purged	
  our	
  serving	
  vessel	
  of	
  all	
  oxygen	
  using	
  carbon	
  dioxide	
  to	
  
avoid	
  oxidation	
  and	
  off-­‐flavors	
  in	
  our	
  final	
  product.	
  
4. We	
  rotated	
  the	
  racking	
  arm	
  to	
  the	
  yeast	
  bed	
  using	
  a	
  sight	
  glass.	
  	
  This	
  
ensured	
  that	
  we	
  removed	
  all	
  beer	
  from	
  our	
  fermenter.	
  
5. We	
  then	
  racked	
  our	
  beer	
  from	
  our	
  fermenter	
  into	
  our	
  serving	
  vessel.	
  	
  We	
  
used	
  2.35-­‐2.4	
  volumes	
  carbon	
  dioxide,	
  which	
  took	
  roughly	
  two-­‐four	
  
hours	
  to	
  fully	
  carbonate.	
  	
  The	
  finished	
  beer	
  was	
  ready	
  to	
  enjoy	
  on	
  
Halloween	
  two	
  days	
  later	
  based	
  on	
  Equinox’s	
  Friday	
  rotating	
  tap	
  
schedule.	
  
	
  
Sensory	
  Evaluation	
  
	
  
After	
  completing	
  tasting	
  and	
  a	
  BJCP	
  score	
  sheet	
  of	
  our	
  Fallout	
  American	
  
Brown	
  Ale	
  on	
  11/12/2014,	
  my	
  total	
  score	
  for	
  our	
  brew	
  was	
  41/50.	
  	
  Here	
  was	
  the	
  
breakdown:	
  
	
  
Aroma	
  (9/12):	
  
	
   -­‐The	
  primary	
  aromas	
  are	
  coffee,	
  chocolate,	
  melon	
  and	
  fruity	
  hop	
  aromas	
  and	
  
roast.	
  	
  The	
  beer	
  had	
  a	
  good	
  balance	
  between	
  malt	
  aromas	
  including	
  toast,	
  chocolate,	
  
and	
  caramel	
  and	
  Amarillo	
  fruity	
  hop	
  aromas.	
  	
  There	
  were	
  slight	
  coffee	
  aromas	
  as	
  
well	
  which	
  were	
  harder	
  to	
  attribute	
  to	
  a	
  particular	
  grain	
  for	
  our	
  bill,	
  perhaps	
  
roasted	
  barley	
  contributed	
  this	
  aroma.	
  Although	
  this	
  initial	
  aroma	
  was	
  complex	
  and	
  
enticing,	
  given	
  some	
  time	
  I	
  picked	
  up	
  hints	
  of	
  cooked	
  corn	
  indicating	
  some	
  dimethyl	
  
sulfide,	
  which	
  was	
  somewhat	
  off-­‐putting.	
  	
  Dimethyl	
  sulfide	
  is	
  a	
  compound	
  present	
  in	
  
grains	
  that	
  volatizes	
  during	
  boiling.	
  	
  Therefore,	
  it	
  is	
  interesting	
  these	
  aromas	
  
occurred	
  when	
  we	
  boiled	
  allowing	
  DMS	
  to	
  escape	
  our	
  kettle.	
  	
  Overall,	
  the	
  initial	
  
aroma	
  was	
  balanced	
  and	
  enjoyable,	
  however,	
  later	
  aromas	
  of	
  DMS	
  subtracted	
  from	
  
the	
  appeal	
  of	
  the	
  aroma	
  of	
  this	
  beer.	
  
	
  
Appearance	
  (3/3):	
  
	
   -­‐The	
  beer	
  had	
  a	
  nice	
  dark	
  brown	
  color,	
  which	
  was	
  nearly	
  opaque.	
  	
  This	
  could	
  
be	
  attributed	
  to	
  the	
  host	
  of	
  dark	
  malts	
  we	
  used	
  including	
  chocolate	
  and	
  roasted	
  
barley.	
  	
  In	
  addition	
  it	
  had	
  a	
  thin,	
  creamy	
  and	
  lasting	
  head	
  with	
  decent	
  lacing.	
  	
  This	
  
great	
  head	
  retention	
  can	
  be	
  contributed	
  to	
  proteins	
  and	
  isohumulones	
  from	
  hops	
  in	
  
the	
  beer,	
  which	
  is	
  logical	
  based	
  on	
  our	
  use	
  of	
  high	
  protein	
  malt	
  such	
  as	
  crystal	
  and	
  
the	
  abundance	
  of	
  high	
  alpha-­‐acid	
  hops	
  we	
  used	
  as	
  well.	
  	
  Overall,	
  the	
  beer	
  had	
  a	
  great	
  
appearance.	
  
 
Flavor	
  (16.5/20):	
  
	
   -­‐Again,	
  the	
  culmination	
  of	
  malt	
  and	
  hops	
  added	
  some	
  great	
  flavors.	
  	
  There	
  
were	
  nice	
  caramel,	
  roast,	
  slight	
  chocolate,	
  and	
  toasty	
  tastes	
  as	
  a	
  result	
  of	
  the	
  malts	
  
we	
  used,	
  which	
  worked	
  together	
  to	
  create	
  a	
  well-­‐balanced	
  malt	
  backbone.	
  	
  	
  Unlike	
  
the	
  aroma,	
  the	
  coffee	
  flavor	
  of	
  this	
  beer	
  was	
  very	
  minor.	
  	
  Furthermore,	
  the	
  beer	
  had	
  
a	
  pronounced	
  fruity,	
  citrusy	
  hop	
  character	
  that	
  could	
  be	
  attributed	
  to	
  both	
  our	
  use	
  
of	
  Amarillo	
  hops	
  as	
  well	
  as	
  American	
  ale	
  yeast.	
  Overall,	
  the	
  brown	
  was	
  well	
  balanced	
  
between	
  malty	
  roast,	
  chocolate,	
  and	
  caramel	
  flavors	
  and	
  fruity	
  hop	
  character.	
  
	
  
Mouthfeel	
  (4/5):	
  
	
   The	
  beer	
  is	
  fairly	
  creamy	
  and	
  medium-­‐bodied.	
  	
  The	
  beer	
  is	
  slightly	
  warm	
  
likely	
  due	
  to	
  its	
  higher	
  than	
  expected	
  alcohol	
  content,	
  yet	
  is	
  still	
  balanced.	
  	
  The	
  beer	
  
is	
  properly	
  carbonated.	
  	
  Overall,	
  the	
  beer	
  had	
  a	
  pleasant	
  mouthfeel.	
  
	
  
Overall	
  Impression	
  (8.5/10)	
  
	
   -­‐This	
  beer	
  fit	
  the	
  BJCP	
  guidelines	
  very	
  well	
  in	
  terms	
  of	
  aroma,	
  appearance,	
  
flavor,	
  and	
  mouthfeel.	
  	
  However,	
  the	
  aroma	
  and	
  flavors	
  are	
  a	
  bit	
  fruitier	
  than	
  the	
  
guidelines	
  suggest	
  but	
  are	
  by	
  no	
  means	
  out	
  of	
  balance.	
  	
  All	
  aspects	
  of	
  this	
  beer	
  were	
  
enjoyable	
  with	
  the	
  exception	
  of	
  the	
  later	
  aromas	
  of	
  DMS	
  volatizing	
  from	
  the	
  beer.	
  	
  
Overall,	
  the	
  beer	
  was	
  very	
  successful	
  based	
  on	
  its	
  balance	
  and	
  enjoyable	
  
characteristics.	
  
	
  
Reflection	
  of	
  Results	
  
	
  
	
   Our	
  experience	
  brewing	
  the	
  Fallout	
  Brown	
  Ale	
  went	
  very	
  smoothly	
  and	
  
ultimately	
  yielded	
  a	
  successful	
  product.	
  	
  Throughout	
  our	
  brew	
  day	
  and	
  other	
  
procedures	
  we	
  encountered	
  few	
  problems	
  if	
  any.	
  	
  Our	
  milling,	
  mashing,	
  lautering,	
  
sparging,	
  boiling,	
  and	
  knockout	
  all	
  occurred	
  successfully	
  without	
  any	
  hiccups	
  or	
  
deviations	
  from	
  our	
  targets	
  and	
  standard	
  protocol.	
  	
  Similarly,	
  we	
  also	
  didn’t	
  
encounter	
  any	
  trouble	
  with	
  our	
  diacetyel	
  rest,	
  cold	
  crashing,	
  fining,	
  racking,	
  or	
  
packaging	
  of	
  our	
  beer.	
  	
  I’d	
  have	
  to	
  say	
  our	
  only	
  slight	
  issues	
  with	
  this	
  brew	
  were	
  due	
  
to	
  lack	
  of	
  measurement	
  of	
  certain	
  values	
  throughout	
  the	
  process	
  such	
  as	
  mash	
  pH	
  
and	
  gravities	
  of	
  the	
  wort	
  throughout	
  the	
  process	
  as	
  well	
  as	
  our	
  rough	
  estimations	
  of	
  
volumes	
  throughout	
  the	
  process.	
  	
  Collin	
  and	
  Jerod	
  had	
  estimated	
  our	
  beer	
  to	
  be	
  
5.3%	
  ABV	
  and	
  a	
  batch	
  size	
  of	
  8.5	
  barrels.	
  	
  However,	
  our	
  beer	
  actually	
  turned	
  out	
  to	
  
be	
  6.3%	
  ABV	
  and	
  a	
  batch	
  yield	
  of	
  8.3	
  barrels.	
  	
  Had	
  we	
  more	
  closely	
  monitored	
  our	
  
pre-­‐boil	
  gravity	
  and	
  made	
  closer	
  volume	
  estimations,	
  we	
  could’ve	
  come	
  closer	
  to	
  
our	
  target,	
  however,	
  it	
  seems	
  difficult	
  working	
  with	
  such	
  large	
  amounts	
  of	
  water	
  to	
  
make	
  completely	
  accurate	
  volume	
  estimations	
  and	
  we	
  ultimately	
  yielded	
  a	
  balanced,	
  
delicious	
  beer	
  so	
  it	
  wasn’t	
  too	
  much	
  of	
  an	
  issue!	
  	
  Furthermore,	
  Collin	
  mentioned	
  that	
  
as	
  a	
  pub	
  Equinox	
  has	
  more	
  leniency	
  to	
  not	
  be	
  completely	
  exact	
  with	
  target	
  values	
  
due	
  to	
  the	
  fact	
  they	
  engage	
  in	
  little	
  distribution.	
  	
  While	
  they	
  aim	
  for	
  consistency	
  with	
  
their	
  beer,	
  especially	
  signature	
  brands	
  such	
  as	
  Orion	
  Red	
  or	
  Eclipse	
  Brown,	
  a	
  one-­‐off	
  
beer	
  such	
  as	
  Fallout	
  Brown	
  doesn’t	
  have	
  to	
  be	
  exact,	
  and	
  still	
  yielded	
  an	
  excellent	
  
product.	
  
  As	
  previously	
  mentioned,	
  we	
  fit	
  the	
  BJCP	
  American	
  Brown	
  Ale	
  style	
  well	
  with	
  
the	
  dark	
  brown,	
  creamy,	
  medium-­‐bodied	
  ale	
  which	
  had	
  a	
  great	
  roasty,	
  toasty,	
  
chocolate,	
  coffee,	
  and	
  caramel	
  backbone	
  offering	
  great	
  aromas	
  and	
  flavors	
  balanced	
  
with	
  a	
  citrus	
  and	
  melon	
  hop	
  character.	
  	
  The	
  only	
  major	
  way	
  this	
  beer	
  could	
  have	
  
benefited	
  would	
  be	
  the	
  lack	
  of	
  dimethyl	
  sulfide	
  aromas	
  that	
  were	
  perceived	
  after	
  
letting	
  the	
  beer	
  sit	
  for	
  some	
  time.	
  	
  Otherwise,	
  the	
  beer	
  was	
  incredibly	
  enjoyable	
  in	
  
terms	
  of	
  aroma,	
  appearance,	
  flavor,	
  and	
  mouthfeel.	
  	
  In	
  conclusion,	
  we	
  had	
  a	
  very	
  
smooth,	
  enlightening,	
  and	
  enjoyable	
  experience	
  brewing	
  at	
  Equinox	
  Brewing	
  Co.	
  in	
  
which	
  we	
  further	
  our	
  already	
  developing	
  knowledge	
  of	
  fermentation	
  and	
  brewing	
  
processes	
  by	
  brewing	
  on	
  a	
  production-­‐sized	
  brewing	
  system	
  and	
  ultimately	
  created	
  
a	
  quality	
  final	
  product.	
  
	
   	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  
	
  

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Beer
 

Brew Lab #3

  • 1. Section  1     Name:    John  Schnettler   Name  of  Brew:    Equinox  Fallout  Brown  Ale   Style  of  Brew:    American  Brown  Ale   Brew  Date:    10/11/2014   Packaging  Date:    10/29/14   Batch  Volume:    10  Barrels  (8.3  Barrels  Packaged)   Original  Gravity:    14.8°  P   Final  Gravity:  2.6°  P         Calculation  #1  –  IBU’s     2  lbs  Amarillo  (75  min  –  First  Wort):    Estimated  Pre-­‐Boil  Gravity  =  13.5  Plato   SG  =  (4*13.5)/1000  +  1  =  1.054   (907.2g*0.085*0.23*1000)/  1211.33  l  =  14.642  IBU     2  lbs  Amarillo  (20  min):    Estimated  Boil  Gravity  =  14.5  Plato   SG  =  (4*14.5)/1000  +  1  =  1.058   (907.2g*0.085*0.128*1000)/  1192.4  l  =  8.278  IBU     2  lbs  Amarillo  (15  min):    Estimated  Boil  Gravity  =  14.55  Plato   SG  =  (4*14.55)/1000  +  1  =  1.0582   (907.2g*0.085*0.105*1000)/  1192.4  l  =  6.790  IBU     2  lbs  Amarillo  (10  min):    Estimated  Boil  Gravity  =  14.6  Plato   SG  =  (4*14.6)/1000  +  1  =  1.0584   (907.2g*0.085*0.076*1000)/  1192.4  l  =  4.195  IBU     2  lbs  Amarillo  (5  min):    Estimated  Boil  Gravity  =  14.65  Plato   SG  =  (4*14.65)/1000  +  1  =  1.0586   (907.2g*0.085*0.042*1000)/  1192.4  l  =  2.716  IBU     2  lbs  Amarillo  (0  min):    No  IBU  Contribution     Total  IBU’s  =  36.621  IBU     (International  Bitterness  Units  were  calculated  using  an  estimated  alpha-­‐acid   content  of  8.5%  for  the  Amarillo  hops,  pre-­‐boil  and  during  the  boil  gravities,  hop   utilization  percentages,  and  finally  used  pre-­‐boil  volume  for  bittering  additions  and   post-­‐boil  volume  for  aroma  additions)     Calculation  #2  -­‐  %ABV     (14.8°  Plato  –  2.6°  Plato)  *  0.516  =  6.295%  ABV      
  • 2. Calculation  #3  –  yeast  pitch  volume     (14.8*106  mill/ml*1192.4  l)/200*106  mill/ml  =  88.2376  l  or  23.31  gallons     (Instructor  Jarod  Lydon  estimated  the  slurry  count)     Calculation  #4  –  apparent  attenuation     (14.8°  Plato  –  2.6°  Plato)/14.8°  Plato  =  82.4%                                                                            
  • 3. Section  2     Material  Bill     Grist  Bill:     Malt   Amount   2  Row  Malt   450  lbs   Caramel/Crystal  Malt  –  60L   50  lbs   Chocolate  Malt   40  lbs   Roasted  Barley   5  lbs     Boil  Ingredients:     Ingredient   Amount   Time   Amarillo  Hops  (First  Wort)   2  lbs   75  minutes   Amarillo  Hops   2  lbs   20  minutes   Amarillo  Hops   2  lbs   15  minutes   Amarillo  Hops   2  lbs   10  minutes   Whirlfloc   30  tablets   10  minutes   Servomyces  (Yeast   Nutrient)   1  pack   10  minutes   Amarillo  Hops   2  lbs   5  minutes   Amarillo  Hops   2  lbs   0  minutes     Yeast:    American  Ale  Yeast                                      
  • 4. Equipment:       A.  Equinox  Brewing  System,  Premier  Stainless  Systems  CPBH  Brew  System:   -­‐Hot  Liquor  Tank/  Mash  Tun     -­‐Brew  Kettle     -­‐In  Line  Heat  Exchanger   -­‐Cylindroconical  Fermentation  Vessel   B.    50-­‐gallon  grain  drums   C.    Grain  rake   D.    Hoses   E.    Food  grade  tri-­‐clamp  hoses   F.      Oxygen  stone   G.      Mash  paddle   H.    Hot  gloves   I.        Tool  bucket   J.        Peroxyacetic  acid  sanitizer   K.    Clean  rags   L.      Box  of  extra  tri-­‐clamps  and  gaskets   M.    pH  meter   N.    Hydrometer   O.    Deionized  water  bottle   P.    Hose  sprayer  nozzle   Q.      PBW  cleaning  solution   R.    Serving  vessel   S.      Corny  Keg   T.    Biofine   U.    Hopback   V.    Grain  Mill   W.    Digital  Scale         Procedure     Pre-­‐Boil:     10/11/2014   1. We  arrived  at  Equinox  with  all  of  our  ingredients  provided.    Our  base   malt  was  held  in  a  silo  outdoors,  which  was  transported  by  a  flex  agar  to   the  grain  mill  to  crush  all  grains  into  grist,  leaving  the  husk  still  intact.     After  milling,  the  grain  is  then  carried  by  another  flex  agar  to  the  mash   tun.    In  addition,  we  also  added  our  specialty  malts  directly  to  the  grain   mill  to  be  properly  crushed  and  transported  to  the  mash  tun  via  a  flex   agar.   -­‐  2-­‐row  served  as  our  base  malt  and  primary  source  of  fermentable   sugar.    Roasted  barley  was  used  to  provide  a  small  amount  of  fermentable   sugar,  contribute  roast  and  coffee  flavors,  and  lend  a  darker  color.    
  • 5. Chocolate  malt  was  also  used  in  order  to  provide  a  small  amount  of   fermentable  sugar,  contribute  chocolate  and  nutty  flavors,  and  lend  a   darker  color.    Finally,  we  used  Caramel/Crystal  malt  (60L)  to  contribute   body  and  color  to  the  beer  as  well  as  aid  in  head  retention.    The   culmination  of  these  darker  grains  helped  to  buffer  down  the  pH  towards   an  optimal  mash  temperature.    The  grains  we  utilized  had  already  been   steeped,  germinated,  and  kilned  in  order  to  develop  and  preserve   enzymes  for  the  mash  as  well  as  break  down  grain  cell  walls  in  order  to   be  modified  for  an  effective  mash  and  fermentation.      In  addition,  the   kilning  process  affects  the  color  and  flavor  of  the  grains.    These  processes   constitute  the  malting  of  the  grain.   -­‐We  used  whole  cone  Amarillo  hops  for  bittering  and  aroma  due  to  the   fact  they  have  a  high  alpha-­‐acid  content  as  well  as  contribute  citrus,  floral,   and  grapefruit  aromas  and  flavors.    Alpha  acids  are  a  soft  resin  found  in   hops  that  add  bitterness  to  the  beer  when  isomerized  during  the  boil.     Isomerization  is  the  process  in  which  the  original  alpha-­‐acid  6-­‐carbon   ring  becomes  a  5-­‐carbon  ring  under  high  temperatures  making  the  alpha   acid  soluble  in  water  and  perceivably  bitter.   -­‐Grain  is  milled  in  order  to  reduce  and  control  the  size  of  the  grain  and   break  up  the  endosperm  in  order  to  make  convertible  starches  more   available  at  the  desired  extract  yield.         10/11/2014   1. Collin  and  Jerod  cleaned  all  Equinox  brewing  system  equipment  (using   Clean-­‐In-­‐Place  technology)  and  materials  thoroughly  using  PBW  (2  oz.   per  gallon  of  hot  water)  and  rinsed  with  hot  water  prior  to  our  arrival.      -­‐Cleaning  is  vital  in  removing  soil  and  a  majority  of  existing   microorganisms  from  the  equipment  that  can  cause  inactivation  of   sanitizer  and  potential  contamination  of  the  final  product.   2. Collin  and  Jerod  also  sanitized  all  equipment  (using  Sanitize-­‐In-­‐Place   technology)  and  materials  thoroughly  using  peroxyacetic  acid  (6oz  per  10   gallons  of  water)  and  cold  water  prior  to  our  arrival.      -­‐Peroxyacetic  acid  is  an  acid  sanitizer  containing  surface-­‐active  agents   that  disrupt  microbial  surfaces  and  also  volatizes.   3. We  started  by  heating  the  filled  hot  liquor  tank  for  our  sparge  volume  of  6   barrels  and  also  4.5  barrels  of  strike  water  to  be  added  to  the  mash  tun.     In  addition,  we  began  heating  water  in  the  kettle  to  be  used  in  sterilizing   the  plate  chiller.   4. Once  the  hot  liquor  tank  water  reached  172°F,  we  added  4.5  barrels  of   strike  water  to  our  mash  tun  already  containing  the  culmination  of  our   pale,  chocolate,  and  crystal  malts  as  well  as  roasted  barley  to  the  mash   tun  at  a  steady  rate  while  simultaneously  stirring  to  avoid  clumping  of   grain,  which  can  decrease  the  efficiency  of  the  mash  in  converting   starches  to  fermentable  sugars.         -­‐We  utilized  an  infusion  mash  consisting  of  an  insulated  mash  tun  and   stainless  steel  false  bottom  acting  as  a  lauter  tun  allowing  for  effective  
  • 6. separation  of  wort  from  grain  that  is  unstirred  and  facilitates  starch   conversion  at  a  single  temperature.                -­‐The  mash-­‐in  began  at  9:10am  and  was  considered  fully  mashed-­‐in  at   9:30am.  The  strike  water  brought  the  mash  to  151°F  for  one  hour  which   we  closely  monitored.    At  this  temperature,  although  both  alpha  and  beta   amylase  enzymes  were  functioning,  beta-­‐amylase  was  predominant  thus   creating  chemical  conditions  lending  to  a  lower  extract  yield  but  higher   fermentability.    This  higher  fermentability  will  occur  based  on  beta-­‐ amylase’s  creation  of  maltose  which  is  a  less  complex  carbohydrate  and   thus  easier  to  break  down  during  fermentation.    This  lower  mash  temp   will  ultimately  contribute  to  a  drier  beer.            -­‐We  did  not  take  a  pH  reading  during  the  mash,  however  a  mash   typically  regulates  its  own  pH  for  amylase  to  effectively  function.          -­‐Although  conversion  typically  occurs  in  the  first  thirty  minutes  or  less   of  the  mash,  it  wouldn’t  have  been  a  bad  idea  to  do  an  iodine  test  to   double  check  and  make  sure  conversion  had  occurred  given  our  lack  of   pH  measurement.   5.    We  started  our  vorlauf  at  10:15am  and  allowed  for  fifteen  minutes  of   recirculation.        -­‐Vorlauf  is  the  German  word  for  “pre-­‐run”  and  is  utilized  in  brewing  to   draw  off  and  recirculate  the  wort  throughout  the  mash  tun  without   running  off  into  the  boil  kettle.        -­‐Vorlauf  is  important  in  clarifying  the  wort  being  drawn  out  of  the  mash   tun  and  establishing  a  good  filtration  system  through  the  grain  bed.    The   first  runnings  will  appear  hazy  and  contain  some  milled  grain  particles   but  will  eventually  clear  up.    Due  to  our  potentially  too  fine  ground   roasted  barley  and  chocolate  malts,  we  wanted  a  slow  vorlauf  in  order  to   avoid  pulling  the  grain  bed  down  to  the  filter  and  clogging  the  false   bottom.     7.    After  clarifying  our  wort,  we  began  our  runoff  into  the  boil  kettle  at   10:30am.  During  runoff,  we  added  2  lbs  of  first  wort  Amarillo  whole   flower  hops  to  the  boil  kettle  in  order  to  be  boiled  the  full  75  minutes  as   well  as  potentially  impart  some  hop  flavor  to  our  wort  prior  to  boiling.    At   10:34am  we  began  sparging  using  6  barrels  of  water  at  172°F.    During  the   sparge,  we  made  sure  to  adjust  the  sparge  pump  so  that  the  liquid  level   was  about  2-­‐3  cm  above  the  grain  level  in  order  to  ensure  a  steady  rinsing   of  the  grains.    While  we  ran  off  into  the  kettle,  we  simultaneously  heated   the  boil  kettle  and  held  at  a  temperature  just  before  boiling  in  order  to  be   able  to  begin  boiling  quickly  after  finishing  runoff.        -­‐The  technical  term  for  the  runoff  is  lautering,  where  wort  is  separated   from  grains.    Our  mash  tun  also  acted  as  a  lauter  tun  due  to  the  fact  that  it   has  a  false  bottom  that  effectively  filters  the  wort  without  letting  the   grain  drain  off  in  to  the  kettle.        -­‐We  sparged  in  order  to  give  the  grain  an  extra  rinse  to  drain  off  any   residual  fermentable  sugars  on  the  grain  bed  into  our  boil  kettle.    To   avoid  extracting  tannins  from  the  grains,  we  sparged  using  water  at  a  
  • 7. temperature  that  wasn’t  too  hot,  avoided  over  sparging,  and  avoided   sparging  above  a  pH  of  5.8.       8.      We  finished  sparging  sometime  during  our  lunch  break  and  ended  our   runoff  into  the  boil  kettle  at  12:15pm.    Our  pre-­‐boil  volume  was  roughly   10.5  barrels  or  320  gallons.        -­‐We  monitor  the  gravity  of  our  wort  throughout  the  brewing  process   because  gravity  is  a  measurement  of  sugar  concentration  in  wort/beer,   which  allows  us  to  know  the  fermentation  capacity  of  our  brew  and  how   much  alcohol  will  ultimately  be  produced  during  fermentation.    However,   it  is  important  to  note  that  refractometers  are  fairly  inaccurate  when   measuring  alcohol  and  typically  shouldn’t  be  used  for  beer.    Therefore,  we   chose  not  to  use  a  refractometer  to  obtain  a  rough  estimate  of  numerous   gravity  measurements.     The  Boil:     10/11/2014  (Same  day)   1. We  began  our  boil  time  at  12:15  pm  after  achieving  a  rolling  boil.    At  this   time,  the  whole  flower  Amarillo  hops  that  we  had  added  for  a  first  wort   addition  began  to  isomerize.      -­‐We  boil  our  wort  (unfermented  beer)  in  order  to  evaporate  water  thus   concentrating  the  wort’s  fermentable  sugars,  boil  off  any  volatiles  such  as   dimethyl  sulfide,  and  extract  bitterness  from  hops  via  isomerization.    In   addition,  boiling  wort  is  essential  in  stabilizing  the  wort  by  denaturing   amylase  enzymes  from  mash  as  well  as  killing  any  microorganisms   present  in  the  beer.    Furthermore,  boiling  helps  to  react  simple  sugars   with  amino  acids  to  form  melanoidins  and  flavor  compounds.    Finally,   boiling  denatures  proteins,  causing  the  formation  and  precipitation  of   undesirable  protein-­‐polyphenol  complexes.        -­‐Hops  added  toward  the  beginning  of  the  boil  are  known  as  bittering   hops  because  the  heat  of  the  boil  isomerizes  (changes  the  6-­‐carbon  ring   to  a  5-­‐carbon  ring)  alpha-­‐acids  making  them  soluble  in  water  and  bitter   when  they  were  previously  insoluble  in  water  prior  to  boiling.    These   alpha-­‐acids  are  soft  resins  known  as  humulones  found  within  the  lupulin   glands  of  hops  along  with  essential  oils.      -­‐When  adding  hops  to  the  boil  it  is  important  to  monitor  the  level  of   liquid  in  the  kettle  in  order  to  avoid  a  boil  over.    When  adding  ingredients   to  the  Sabco  system  we  turned  off  the  burner  to  avoid  boil  over  and  also   kept  a  hose  nearby  to  spray  any  erupting  wort.   2. At  12:35,  we  utilized  Sanitize-­‐In-­‐Place  systems  to  sanitize  our   fermentation  vessel  that  had  already  been  cleaned  in  place  the  previous   day.    After  fully  sanitizing  the  fermentation  vessel,  we  back-­‐flushed  the   sanitizer  and  pushed  it  through  our  heat  exchanger  in  order  to  fully   sanitize  the  piece  of  equipment.      
  • 8.    -­‐Due  to  the  fact  that  the  wort  will  be  passing  through  the  heat  exchanger   and  into  the  fermentation  vessel  following  boiling,  it  is  imperative  that   these  pieces  of  equipment  are  completely  clean  and  sanitized  so  as  to   avoid  microbial  contamination  of  our  beer.   3. At  12:55  pm,  we  transferred  27  gallons  of  house  propagated,  American   ale  yeast  from  the  mini  cylindroconical  vessel  to  the  primary   fermentation  vessel  using  pressure  from  carbon  dioxide.   -­‐Collin  and  Jerod  were  confident  that  the  heat  exchanger  would  function   properly  and  cooled  wort  could  be  added  directly  to  the  yeast-­‐filled   fermenter.        -­‐Collin  and  Jerod  estimated  a  yeast  slurry  count  of  200*106  mill/ml  and  a   pitch  rate  of  12*106  cells/ml  leading  them  to  calculate  a  volume  of  27   gallons  of  yeast  to  be  pitched.   4. At  1:10pm,  we  added  2  lbs  of  Amarillo  whole  flower  hops  to  our  kettle,   which  had  twenty  minutes  of  boiling  remaining.    Amarillo  hops  are   known  to  impart  citrus,  floral,  and  grapefruit  aromas  and  flavors  in  the   finished  beer.   5. At  1:15  pm,  we  added  another  2  lbs  of  Amarillo  whole  flower  hops  for  the   same  purpose.   6. At  1:20  pm,  we  added  another  2  lbs  of  Amarillo  whole  flower  hops  for  the   same  purpose.    In  addition,  we  added  1  pack  of  Servomyces  yeast  to   nourish  the  yeast  throughout  the  stages  of  fermentation.    Finally,  we   added  30  tablets  of  Whirlfloc  in  order  to  help  clarify  the  wort  by   precipitating  proteins  and  beta  glucans  that  contribute  haze  in  the  final   product.   7. At  1:25  pm,  we  added  another  2  lbs  of  Amarillo  whole  flower  hops  for  the   same  purpose.   8. At  1:30pm  we  turned  off  the  heat  ending  the  boil,  a  process  known  as   flameout.    Although  cleaning  and  sanitation  are  emphasized  throughout   the  entire  brewing  process,  it  is  absolutely  vital  that  anything  that  comes   in  contact  with  the  wort  from  this  point  forward  is  clean  and  sanitized  to   avoid  contamination  due  to  the  fact  that  the  major  antibacterial  step,  the   boil,  is  finished.    At  this  time,  we  also  made  one  last  2  lb  Amarillo  whole   flower  hop  addition  for  strictly  aroma  and  flavoring  purposes  using  the   hopback  equipment,  at  that  point  hop  alpha-­‐acids  were  not  being   isomerized.    The  hopback  attached  to  the  boil  kettle  and  then  to  the  heat   exchanger  in  order  to  not  only  provide  aroma  and  flavor,  but  also  filter   out  any  whole  cone  hops  or  trub.     (At  some  point  during  the  boil,  we  opened  up  the  mash  tun  and  raked  all  spent  grain   into  drums  to  be  reused  by  a  local  farmer)     Post  Boil:     10/11/2014  (Same  day)  
  • 9. 1. After  turning  the  kettle  burner  off  at  1:30pm,  we  simultaneously  initiated   the  whirlpool  and  prepared  the  heat  exchanger  for  knockout  at  1:35pm.     To  initiate  the  whirlpool,  we  used  a  clean  and  sanitized  paddle  to   vigorously  stir  the  wort  into  centrifugal  motion.   -­‐The  purpose  of  the  whirlpool  is  to  collect  hop  residues  and  hot  break   (denatured  protein-­‐polyphenol  complexes)  at  the  center  and  bottom  of   the  kettle  via  centrifugal  motion.    This  helps  to  clarify  the  wort  and  make   it  easier  to  separate  from  the  trub  settled  at  the  bottom  of  the  kettle.   2. During  the  whirlpool,  we  prepared  for  knockout  (running  off  wort  into   the  fermenter)  by  connecting  the  heat  exchanger  to  both  the  hopback   (attached  to  the  boil  kettler)  and  fermenter  using  tri-­‐clamps.    We  did  not   need  to  use  an  oxygen  tank  due  to  the  fact  the  heat  exchanger  already   contained  an  oxygen  stone.    In  addition,  we  measured  the  post-­‐boil   volume  to  be  10  barrels  as  estimated  by  Jerod.   3. After  connecting  a  clean  and  sanitized  tri-­‐clamp  hose  from  the  kettle  to   the  hopback,  a  clean  and  sanitized  tri-­‐clamp  hose  to  the  heat  exchanger   and  a  clean,  and  sanitized  tri-­‐clamp  hose  from  the  heat  exchanger  to  the   fermenter,  we  turned  on  the  water  supply  facilitating  cooling  of  the  wort   as  it  passed  through  the  chiller  into  the  fermenter.    In  addition,  the   provided  oxygen  stone  in  the  heat  exchanger  was  used  to  facilitate  a   steady  bubbling  and  aeration  of  the  wort.    We  began  knockout  at  1:45pm   by  opening  the  kettle  and  allowing  the  wort  to  pass  through  the  chiller   system  and  into  the  fermenter.    This  process  occurred  at  a  temperature  of   72°F.   -­‐Cooling  the  wort  to  approximately  65-­‐70°  F  is  absolutely  vital  in  order  to   provide  the  ale  yeast  we  were  using  the  proper  fermentation   environment  in  terms  of  temperature.    Both  ale  and  lager  yeast  will  not   survive  if  pitched  into  non-­‐cooled  wort.    The  wort  should  be  rapidly   cooled  in  order  to  avoid  oxidation,  formation  of  sulfur  compounds,   contamination,  and  also  in  order  to  form  the  cold  break  (trub  settled  out   after  cooling).      -­‐We  use  oxygen  to  aerate  the  wort  due  to  the  fact  that  yeast  need  oxygen   in  the  lag  and  growth  phase  in  order  to  produce  lipids  and  ultimately   grow  and  multiply.    This  ensures  a  healthy,  steady  fermentation  in  which   the  yeast  aren’t  over-­‐stressed.   4. At  2:25pm,  we  finished  knockout  into  the  keg-­‐style  fermenter.    The  rapid   chilling  of  the  wort  formed  a  cold  break  (trub  settled  out  after  cooling),   which  we  drained  into  a  slop  bucket  and  discarded.          -­‐Our  fermenter  after  cooling  was  about  68°F  and  therefore  a  favorable   fermentation  temperature.   5. As  part  of  the  class  handled  transferring  between  fermenters,  we  also   began  cleaning  Equinox’s  brewing  system  and  its  components.        -­‐To  clean  the  brew  system,  we  first  emptied  the  mash  tun  (as  previously   mentioned)  as  well  as  we  cleaned  drained  the  trub  and  leftover  hops  from   the  boil  kettle.    Collin  and  Jerod  handled  CIP  of  the  brewing  system  the   next  day.  
  • 10. 6. While  we  were  knocking  out,  we  took  a  gravity  reading  using  a   hydrometer  and  measured  a  gravity  of  14.8°  Plato.    Although  we  pitched   the  yeast  into  the  empty  fermenter  at  12:55  pm,  wort  didn’t  enter  the   fermenter  until  1:45  pm.   -­‐As  previously  mentioned,  cleaning  and  sanitation  is  vital  post  boil   therefore  we  exercised  extreme  caution  when  handling  our  cooled  wort.      -­‐We  use  a  blow  off  hose  to  allow  carbon  dioxide,  a  product  of   fermentation,  to  escape  our  fermentation  vessel.    We  placed  the  blow  off   in  sanitizer  to  avoid  contamination  and  oxygen  from  entering  the   fermenter.      -­‐Our  estimated  batch  volume  was  8.5  barrels  according  to  Collin  and   Jerod’s  estimations  whereas  our  actual  batch  volume  in  the  fermenter   was  10  barrels.    In  addition,  our  actual  original  gravity  was  14.8°  Plato,   which  was  much  higher  than  our  estimated  original  gravity  of  1.055  or   roughly  13.5°  Plato.    It  seems  these  discrepancies  likely  occurred  due  to   somewhat  inaccurate  estimations  of  volumes  throughout  brewing  as  well   as  neglect  of  measuring  gravity  throughout  the  process  and  responding   accordingly.   7. After  finishing  knockout  into  the  cylindroconical  fermenter  already   containing  yeast,  the  fermenter  remained  at  nearly  room  temperature   until  it  was  time  to  cold  crash.   -­‐During  storage  at  room  temperature,  the  yeast  we  pitched  were  in  an   anaerobic  environment  which  facilitated  the  metabolism  of  sugars   (primarily  maltose  and  maltotriose)  by  yeast  creating  ethanol,  carbon   dioxide,  and  various  other  flavor  components/byproducts  in  a  process   known  as  fermentation.     10/23/2014   1.      At  this  time,  we  allowed  for  a  diacetyl  rest  at  68°F.    Diacetyl  is  a  natural                     by  product  of  fermentation  known  for  imparting  buttery  or  butterscotch   flavors  in  the  final  product.    By  allowing  the  fermented  beer  to  rest  at  this   temperature,  we  removed  diacetyl,  a  common  off  flavor  in  finished  beers.     10/26/2014   1. We  cold  crashed  our  beer  at  this  time  in  order  to  ultimately  clarify  our   beer.    This  occurs  due  to  the  fact  that  when  cold  crashed  at  near  freezing   temperatures,  yeast  and  other  sediments  undesirable  in  the  final  product   will  group  together  (flocculate)  and  fall  to  the  bottom  of  the  vessel.    Our   fermentation  occurred  at  68°  F  and  we  cold  crashed  at  38°  F.       10/27/2014   1. At  this  time,  we  added  finings  to  our  beer  which  had  measured  out  to  a   final  gravity  of  2.6°P.    In  order  to  add  finings  to  our  beer,  we  first  purged   our  fining  brink,  a  small  corny  keg,  in  order  to  make  sure  we  weren’t   adding  oxygen  to  our  beer,  which  can  cause  off  flavors.   2. Next,  we  added  350  ml  of  Biofine  fining  brink  to  our  cylindroconical  and    
  • 11.   Packaging:       10/17/2014   1. We  ended  cold  crash  on  this  day.    To  prepare  for  racking  off  into  our   serving  vessel  we  utilized  a  CIP  loop  to  first  clean  the  vessel  using  10   gallons  of  90-­‐100°  F  water  and  20  oz.  of  acid  cleaner.   2. Next,  we  utilized  a  SIP  loop  to  sanitize  the  vessel  using  10  gallons  of  cold   water  and  6  oz.  of  peroxyacetic  acid.       3. Next,  we  purged  our  serving  vessel  of  all  oxygen  using  carbon  dioxide  to   avoid  oxidation  and  off-­‐flavors  in  our  final  product.   4. We  rotated  the  racking  arm  to  the  yeast  bed  using  a  sight  glass.    This   ensured  that  we  removed  all  beer  from  our  fermenter.   5. We  then  racked  our  beer  from  our  fermenter  into  our  serving  vessel.    We   used  2.35-­‐2.4  volumes  carbon  dioxide,  which  took  roughly  two-­‐four   hours  to  fully  carbonate.    The  finished  beer  was  ready  to  enjoy  on   Halloween  two  days  later  based  on  Equinox’s  Friday  rotating  tap   schedule.     Sensory  Evaluation     After  completing  tasting  and  a  BJCP  score  sheet  of  our  Fallout  American   Brown  Ale  on  11/12/2014,  my  total  score  for  our  brew  was  41/50.    Here  was  the   breakdown:     Aroma  (9/12):     -­‐The  primary  aromas  are  coffee,  chocolate,  melon  and  fruity  hop  aromas  and   roast.    The  beer  had  a  good  balance  between  malt  aromas  including  toast,  chocolate,   and  caramel  and  Amarillo  fruity  hop  aromas.    There  were  slight  coffee  aromas  as   well  which  were  harder  to  attribute  to  a  particular  grain  for  our  bill,  perhaps   roasted  barley  contributed  this  aroma.  Although  this  initial  aroma  was  complex  and   enticing,  given  some  time  I  picked  up  hints  of  cooked  corn  indicating  some  dimethyl   sulfide,  which  was  somewhat  off-­‐putting.    Dimethyl  sulfide  is  a  compound  present  in   grains  that  volatizes  during  boiling.    Therefore,  it  is  interesting  these  aromas   occurred  when  we  boiled  allowing  DMS  to  escape  our  kettle.    Overall,  the  initial   aroma  was  balanced  and  enjoyable,  however,  later  aromas  of  DMS  subtracted  from   the  appeal  of  the  aroma  of  this  beer.     Appearance  (3/3):     -­‐The  beer  had  a  nice  dark  brown  color,  which  was  nearly  opaque.    This  could   be  attributed  to  the  host  of  dark  malts  we  used  including  chocolate  and  roasted   barley.    In  addition  it  had  a  thin,  creamy  and  lasting  head  with  decent  lacing.    This   great  head  retention  can  be  contributed  to  proteins  and  isohumulones  from  hops  in   the  beer,  which  is  logical  based  on  our  use  of  high  protein  malt  such  as  crystal  and   the  abundance  of  high  alpha-­‐acid  hops  we  used  as  well.    Overall,  the  beer  had  a  great   appearance.  
  • 12.   Flavor  (16.5/20):     -­‐Again,  the  culmination  of  malt  and  hops  added  some  great  flavors.    There   were  nice  caramel,  roast,  slight  chocolate,  and  toasty  tastes  as  a  result  of  the  malts   we  used,  which  worked  together  to  create  a  well-­‐balanced  malt  backbone.      Unlike   the  aroma,  the  coffee  flavor  of  this  beer  was  very  minor.    Furthermore,  the  beer  had   a  pronounced  fruity,  citrusy  hop  character  that  could  be  attributed  to  both  our  use   of  Amarillo  hops  as  well  as  American  ale  yeast.  Overall,  the  brown  was  well  balanced   between  malty  roast,  chocolate,  and  caramel  flavors  and  fruity  hop  character.     Mouthfeel  (4/5):     The  beer  is  fairly  creamy  and  medium-­‐bodied.    The  beer  is  slightly  warm   likely  due  to  its  higher  than  expected  alcohol  content,  yet  is  still  balanced.    The  beer   is  properly  carbonated.    Overall,  the  beer  had  a  pleasant  mouthfeel.     Overall  Impression  (8.5/10)     -­‐This  beer  fit  the  BJCP  guidelines  very  well  in  terms  of  aroma,  appearance,   flavor,  and  mouthfeel.    However,  the  aroma  and  flavors  are  a  bit  fruitier  than  the   guidelines  suggest  but  are  by  no  means  out  of  balance.    All  aspects  of  this  beer  were   enjoyable  with  the  exception  of  the  later  aromas  of  DMS  volatizing  from  the  beer.     Overall,  the  beer  was  very  successful  based  on  its  balance  and  enjoyable   characteristics.     Reflection  of  Results       Our  experience  brewing  the  Fallout  Brown  Ale  went  very  smoothly  and   ultimately  yielded  a  successful  product.    Throughout  our  brew  day  and  other   procedures  we  encountered  few  problems  if  any.    Our  milling,  mashing,  lautering,   sparging,  boiling,  and  knockout  all  occurred  successfully  without  any  hiccups  or   deviations  from  our  targets  and  standard  protocol.    Similarly,  we  also  didn’t   encounter  any  trouble  with  our  diacetyel  rest,  cold  crashing,  fining,  racking,  or   packaging  of  our  beer.    I’d  have  to  say  our  only  slight  issues  with  this  brew  were  due   to  lack  of  measurement  of  certain  values  throughout  the  process  such  as  mash  pH   and  gravities  of  the  wort  throughout  the  process  as  well  as  our  rough  estimations  of   volumes  throughout  the  process.    Collin  and  Jerod  had  estimated  our  beer  to  be   5.3%  ABV  and  a  batch  size  of  8.5  barrels.    However,  our  beer  actually  turned  out  to   be  6.3%  ABV  and  a  batch  yield  of  8.3  barrels.    Had  we  more  closely  monitored  our   pre-­‐boil  gravity  and  made  closer  volume  estimations,  we  could’ve  come  closer  to   our  target,  however,  it  seems  difficult  working  with  such  large  amounts  of  water  to   make  completely  accurate  volume  estimations  and  we  ultimately  yielded  a  balanced,   delicious  beer  so  it  wasn’t  too  much  of  an  issue!    Furthermore,  Collin  mentioned  that   as  a  pub  Equinox  has  more  leniency  to  not  be  completely  exact  with  target  values   due  to  the  fact  they  engage  in  little  distribution.    While  they  aim  for  consistency  with   their  beer,  especially  signature  brands  such  as  Orion  Red  or  Eclipse  Brown,  a  one-­‐off   beer  such  as  Fallout  Brown  doesn’t  have  to  be  exact,  and  still  yielded  an  excellent   product.  
  • 13.   As  previously  mentioned,  we  fit  the  BJCP  American  Brown  Ale  style  well  with   the  dark  brown,  creamy,  medium-­‐bodied  ale  which  had  a  great  roasty,  toasty,   chocolate,  coffee,  and  caramel  backbone  offering  great  aromas  and  flavors  balanced   with  a  citrus  and  melon  hop  character.    The  only  major  way  this  beer  could  have   benefited  would  be  the  lack  of  dimethyl  sulfide  aromas  that  were  perceived  after   letting  the  beer  sit  for  some  time.    Otherwise,  the  beer  was  incredibly  enjoyable  in   terms  of  aroma,  appearance,  flavor,  and  mouthfeel.    In  conclusion,  we  had  a  very   smooth,  enlightening,  and  enjoyable  experience  brewing  at  Equinox  Brewing  Co.  in   which  we  further  our  already  developing  knowledge  of  fermentation  and  brewing   processes  by  brewing  on  a  production-­‐sized  brewing  system  and  ultimately  created   a  quality  final  product.