Wheat bran is available either prepackaged or in the bulk bin aisle of the supermarket. Because most people only use a tablespoon or so at a time, storing wheat bran can be a bit tricky. But keeping it fresh not only provides a healthier product, it also reduces the chance that the bran will turn rancid over time or attract pantry moths to your cupboard. When properly stored, wheat bran can stay fresh for up to one year.
Store wheat bran in an airtight container, preferably a glass or food-grade plastic container with a tight-fitting lid. Sealable plastic bags, such as freezer bags, will also work.
Place the wheat bran in the refrigerator or freezer for best keeping. The cold prevents the bran from turning rancid and spoiling.
Keep the wheat bran in a tightly sealed container in a dark, cool corner of the pantry or cupboard. This will work if refrigerator or freezer space is not available.