Protecting cornmeal from air, light and moisture helps keep it fresh. Your options for how to store cornmeal depend on whether the meal is processed or whole-grain. Processed cornmeal resists spoiling longer because it lacks the germ and bran of the corn. Cornmeal made from whole corn, also called whole-grain or old-fashioned cornmeal, contains the nutrient-rich germ. Whole-grain cornmeal requires greater care to protect it from spoiling.
