The Food Lab: Better Home Cooking Through Science

vigorously.

Baking

Soda

8 months to a year

Cornstarch Indefinitely

Dutch-

Process

Cocoa

1 to 2 years

Flour, all-

purpose

Transferred to  a   sealed

container   up  to  a   year

Flour,

bread

Transferred to  a   sealed

container   up  to  a   year

Gelatin,

powdered

Indefinitely

Sugar,

brown

In  an  airtight    plastic

bag,    3   to  4   months