Here's how to prolong the life of an essential kitchen ingredient.
All Purpose Flour: 1 year
Whole Wheat Flour and Cornmeal: 1 year (in freezer)
Do transfer all-purpose flour out of its paper bag and into an airtight container to protect it from humidity.
Don't leave whole wheat flour or cornmeal in the pantry; they contain natural oils that will go rancid in as little as 3 months.
Do enclose whole wheat flour and cornmeal in zipper-lock bags and store them in the freezer.