Yes, millet flours should be stored refrigerated, especially during summer, to prevent them from going rancid due to their high oil content. Refrigeration helps maintain their freshness and nutritional value.
Millet flours, like other whole grain flours, contain natural oils. These oils are susceptible to oxidation, which leads to rancidity, especially in warm and humid conditions like those experienced during summer. Rancid flour not only tastes unpleasant but also loses its nutritional value. Refrigerating millet flour significantly slows down the oxidation process, preserving its flavor, aroma, and nutritional properties for a longer period. To properly store millet flour in the refrigerator, ensure it is in an airtight container or a resealable bag. This prevents moisture absorption and cross-contamination with other food items in the refrigerator. Properly stored, refrigerated millet flour can last for several months.
If you live in a particularly hot and humid climate, consider storing millet flour in the freezer for even longer shelf life. Just be sure to bring it to room temperature before using it in your recipes to avoid affecting the dough's consistency.