While whole grain flours last longer than most perishable food items, they spoil much quicker than intact grains do. This is primarily because the protective bran layer around the grain has been broken, allowing oxygen and moisture to reach every part of the grain. Like whole intact grains, flours and meals will need to be stored in an airtight container. When stored in a dark, cool, and dry area, they typically remain fresh for 1- 3 months. If kept in the freezer, their shelf life can extend to 2-6 months.
When purchasing whole grains in any form, it's essential to look for the expiration date. Because whole grains commonly come in large quantities, it's unlikely that you'll use the entire package all at once. To ensure your grains last as long as possible, choose the bag with the newest expiration date.
