The document classifies various types of commodities used in cooking into three categories:
1) Perishables such as dairy, meat and produce which have short shelf lives of 6 hours to 6 days.
2) Semi-perishables such as cereals, oils and canned goods which last weeks to months.
3) Non-perishables such as salt, sugar and food colors which can be stored indefinitely.
It then provides further classifications for various food items like vegetables, meat, fish, seafood, fruits and dairy products.