Powerpoint presentation of "Stocks" in Principles of food production. Disclaimer: I do not own the rights nor property of this powerpoint presentation. All rights reserved to the owner. Don't forget to follow me on twitter @joviinthecity Thank You! xoxo -Jovi

1. STOCKSSTOCKS

2. STOCKSSTOCKS
 StocksStocks - is a thin clear flavorful liquid- is a thin clear flavorful liquid
extracted from meat, poultry, fish, andextracted from meat, poultry, fish, and
their bones and from vegetables andtheir bones and from vegetables and
seasoning.seasoning.
 A liquid that forms the foundation ofA liquid that forms the foundation of
sauces and soups.sauces and soups.
 BaseBase: A powdered or concentrated form: A powdered or concentrated form
of a stock.of a stock.

3. Composition of StocksComposition of Stocks
 • 50% nourishing element (bones)
 • 10% mirepoix
 • Bouquet garni
 • 100% liquid

4. BonesBones
Are the major ingredient of stocks.
Most of the flavors and body of stocks derived from
the bones of beef, veal, chicken, fish, and ccasionally
lamb, pork, ham, and game.
CollagenCollagen, connective tissues when break down, they
form gelatin.
*CartilageCartilage is the best source of gelatin in bones.
These two, gives body to stock, an important feature
of its quality. A well made stocks will thicken or even
solidify when chilled.

5. MirepoixMirepoix –.–. is a mixture of
roughly chopped
vegetables used to add
flavor, nutrients, and color
to a stock. It usually
consists of onions, celery,
carrots, and leeks.
Percentage of mirepoixPercentage of mirepoix
 50% 0nion
 25% carrots
 25% celery
 10% leeks

6.  White mirepoixWhite mirepoix – made without carrots, is– made without carrots, is
used when it is necessary to keep theused when it is necessary to keep the
stock as colorless as possible.stock as colorless as possible.
 Cutting of mirepoixCutting of mirepoix – chop the– chop the
vegetables coarsely into relatively uniform-vegetables coarsely into relatively uniform-
sized pieces. The size depends on howsized pieces. The size depends on how
long it will cook. If mirepoix will cook along it will cook. If mirepoix will cook a
long time as for beef stock, cut into largelong time as for beef stock, cut into large
pieces about 1-2 inches.pieces about 1-2 inches.

7. Production of StocksProduction of Stocks
The five steps in producing a stockThe five steps in producing a stock
 Cold LiquidCold Liquid - To make stock, start with cold
liquid to allow the solid ingredients to slowly
release flavor and to help prevent cloudiness.
 Natural Clarification - Muscles, blood, and
many vegetable tissues in the nourishing
element or mirepoix contain albumin.
 AlbuminAlbumin is a protein that is soluble only in cold
water. After it has been released slowly into
water, albumin can clarify the liquid naturally by
coagulating with impurities.

8. Production of Stocks
 SkimmingSkimming - During
simmering, use the process of
dépouillage to skim fat and
impurities from the surface.
This process is performed as
the liquid simmers and the
convection movement forces
the fats and impurities to the
surface. There they
accumulate in a smaller area,
making skimming easier.
Remove the fat and impurities
from the surface with a ladle

9. Production of Stocks
 Maintaining Simmering Temperature - To
allow the cooking liquid to properly clarify and
fortify, simmer the stock by heating the liquid to
a temperature between 185°F–200°F (85°C–
93°C). This allows for slow convection
movement to occur.
 Straining Stocks - When the stock has
simmered long enough for it to acquire the
flavor, color, and body desired, it is ready to
strain. Use a ladle to remove the stock from the
stockpot into a chinois (China cap) lined with
cheesecloth.

10.  WHITE STOCKWHITE STOCK –– is
colorless, made by
simmering
vegetables with the
bones of chicken,
beef, veal, or fish.

11. BLANCHING BONESBLANCHING BONES
The purpose of blanching bones is to
rid them of some of the impurities that
cause cloudiness. The bones of
young animals, especially veal and
chicken, are highest in blood and
other impurities that cloud and
discolor stocks.

12. Procedure for Blanching BonesProcedure for Blanching Bones
1. Rinse bones in cold water.1. Rinse bones in cold water.
 This washes off blood and other impurities from
the surface. It is especially important if the
bones are not strictly fresh.
2.2. Place bones in a stockpot or steam-jacketedPlace bones in a stockpot or steam-jacketed
kettle and cover with cold water.kettle and cover with cold water.
 Impurities dissolve more readily in cold water.
Hot water retards extraction.
3. Bring the water to a boil.3. Bring the water to a boil.
 As the water heats, impurities solidify
(coagulate) and rise to the surface as scum.
4. Drain the bones and rinse them well.4. Drain the bones and rinse them well.
 The bones are now ready for the stockpot.

13. 1. Cut the bones into pieces, 3 to 4 inches (8 to 10 cm) long.1. Cut the bones into pieces, 3 to 4 inches (8 to 10 cm) long.
 This exposes more surface area and helps extraction. A meat
saw is used to cut heavy veal and beef bones. Fish and
chicken bones don’t need to be cut, but whole carcasses
should be chopped for more convenient handling.
2. Rinse the bones in cold water. (If desired, chicken, veal, or2. Rinse the bones in cold water. (If desired, chicken, veal, or
beef bones may be blanched.)beef bones may be blanched.)
 This removes some impurities that cloud the stock or, if the
bones are old, give an off taste.
3. Place bones in a stockpot or steam-jacketed kettle and add3. Place bones in a stockpot or steam-jacketed kettle and add
cold water to cover.cold water to cover.
 Starting in cold water speeds extraction. Starting in hot water
delays it because many proteins are soluble in cold water but
not in hot.
Procedure for Preparing WhiteProcedure for Preparing White
StocksStocks

14. Procedure for PreparingProcedure for Preparing
White StocksWhite Stocks
4. Bring water to a boil, and then reduce to a4. Bring water to a boil, and then reduce to a
simmer. Skim the scum that comes to thesimmer. Skim the scum that comes to the
surface, using a skimmer or perforated spoon.surface, using a skimmer or perforated spoon.
 Skimming is important for a clear stock
because the scum (which is fat and coagulated
protein) will cloud the stock if it is broken up
and mixed back into the liquid.
5. Add the chopped mirepoix and the herbs and5. Add the chopped mirepoix and the herbs and
spices.spices.
 Remember, the size to which you cut mirepoix
depends on how long it is to be cooked.

15. Procedure for PreparingProcedure for Preparing
White StocksWhite Stocks
6. Do not let the stock boil. Keep it at a low simmer.6. Do not let the stock boil. Keep it at a low simmer.
 Boiling makes the stock cloudy because it breaks
solids into tiny particles that get mixed into the
stock.
7. Skim the surface as often as necessary during7. Skim the surface as often as necessary during
cooking.cooking.
8. Keep the water level above the bones. Add more8. Keep the water level above the bones. Add more
water if the stock reduces below this level.water if the stock reduces below this level.
 Bones cooked while exposed to air will turn dark
and thus darken or discolor the stock. Also, they
do not release flavor into the water if the water
doesn’t touch them.

16. Procedure for Preparing White StocksProcedure for Preparing White Stocks
9. Simmer for recommended length of time:9. Simmer for recommended length of time:
 Beef and veal bones—6 to 8 hours
 Chicken bones—3 to 4 hours
 Fish bones—30 to 45 minutes
 Flavors begin to break down or degenerate over time.
The above times are felt to be the best for obtaining full
 flavor while still getting a good portion of gelatin into
the stock.
10. Skim the surface and strain off the stock through a10. Skim the surface and strain off the stock through a
china cap lined with several layers of cheesecloth.china cap lined with several layers of cheesecloth.
 Adding a little cold water to the stock before skimming
stops the cooking and brings more fat and impurities to
the surface.

17. 11. Cool the stock as quickly as possible, as follows:11. Cool the stock as quickly as possible, as follows:
 • Set the pot in a sink with blocks, a rack, or some other
object under it. This is called venting. It allows cold
water to flow under the pot as well as around it.
 • Run cold water into the sink, but not higher than the
level of the stock or the pot will become unsteady. An
overflow pipe keeps the water level right and allows for
constant circulation of cold water
 • Stir the pot occasionally so all the stock cools evenly.
Hang a ladle in the pot so you can give it a quick stir
whenever you pass the sink without actually taking extra
time to do it.
 Cooling stock quickly and properly is important.
Improperly cooled stock can spoil in 6 to 8 hours
because it is a good breeding ground for bacteria that
cause food-borne disease and spoilage.
Procedure for Preparing White StocksProcedure for Preparing White Stocks

18. Procedure for Preparing WhiteProcedure for Preparing White
StocksStocks
12. When cool,12. When cool,
refrigerate therefrigerate the
stock in coveredstock in covered
containers.containers.
 Stock will keep 2
to 3 days if
properly
refrigerated.
Stock can also be
frozen and will
keep for several
Setup for cooling stocks in a cold
water bath.

19.  Brown stock –– isis
made from beefmade from beef
or veal bonesor veal bones
that have beenthat have been
browned in thebrowned in the
oven.oven.

20. Procedure for Preparing Brown Stocks
 1. Cut the bones into pieces, 3 to 4 inches (8 to 10
cm) long, as for white stock. Veal and/or beef
bones are used for brown stock.
 2. Do not wash or blanch the bones. The moisture
would hinder browning.
 3. Place the bones in a roasting pan in one layer
and brown in a hot oven at 375°F (190°C) or
higher. The bones must be well browned to color
the stock
 sufficiently. This takes over an hour. Some chefs
prefer to oil the bones lightly before browning.
 4. When the bones are well browned, remove
them from the pan and place them in a stockpot.
Cover with cold water and bring to a simmer.

21. Procedure for Preparing Brown
Stocks
 5. Drain and reserve the fat from the roasting pan.
Deglaze the pan by adding water and stirring over
heat until all the brown drippings are dissolved or
loosened. Add to stockpot.
 6. While the stock is getting started, place the
mirepoix in the roasting pan with some of the
reserved fat and brown the vegetables well in the
oven.
 7. When the water in the stockpot comes to a
simmer, skim and continue as for white stock.
 8. Add the browned vegetables and the tomato
product to the stockpot. If desired, they may be held
out until 2 to 3 hours before the end of the cooking
time.
 9. Continue as for white stock.

22. Procedure for Preparing Brown
Stocks
 Alternative ProcedureAlternative Procedure
 The mirepoix may be browned with the
bones. When the bones are half
browned, add the mirepoix to the pan
and continue roasting until bones and
vegetables are browned. Tomato may
be added toward the end of browning
time, but exercise caution, as tomato
purée burns easily.

23. PREPARING BROWN STOCKSPREPARING BROWN STOCKS

24.  Fish stockFish stock – is– is
made from fishmade from fish
bones andbones and
trimmings.trimmings.
 FumetFumet- A fish stock- A fish stock
that has had lemonthat has had lemon
juice or another acidjuice or another acid
added and thenadded and then
been reduced bybeen reduced by
50%.50%.

25. PREPARING FISH STOCKPREPARING FISH STOCK
 Add butter in a stock pot, add mirepoix sweat itAdd butter in a stock pot, add mirepoix sweat it
for 5 minutes. Then add the bones, over lowfor 5 minutes. Then add the bones, over low
heat for 5 minutes until the bones are turn whiteheat for 5 minutes until the bones are turn white
and begin to exude some juices.and begin to exude some juices.
 Add white wine, bring to a simmer, then addAdd white wine, bring to a simmer, then add
water to cover and the sachet,water to cover and the sachet,
 bring to a simmer again, skim and simmer forbring to a simmer again, skim and simmer for
another 30-45 mins.another 30-45 mins.
 Strain in a china cap lined with cheese cloth,Strain in a china cap lined with cheese cloth,
cool it down properly and store.cool it down properly and store.

26.  Vegetable StockVegetable Stock: Flavor changes depending on: Flavor changes depending on
the vegetables used.the vegetables used.
 GlazeGlaze:: A reduced and concentrated stock.A reduced and concentrated stock.
 ReductionReduction:: The process of evaporating part of aThe process of evaporating part of a
stock's water by simmering or boiling.stock's water by simmering or boiling.
 RemouillageRemouillage is a stock made from bones that
have already been used once to make stock.
 The literal meaning of the French term is
“rewetting.” Because not all possible flavor
 and gelatin is extracted from bones when
making a stock.

27. THE ENDTHE END
THANK YOU!THANK YOU!

28. DO NOT FORGET TO FOLLOWDO NOT FORGET TO FOLLOW
ME ON TWITTERME ON TWITTER
@JOVIINTHECITY@JOVIINTHECITY
THANK YOU!THANK YOU!