Turmeric powder should be kept in a tightly sealed container and stored in a cool, dry place, protected from light. Fresh turmeric rhizome should be placed in the refrigerator. Too much heat should be avoided as it can volatilize and dissipate its aromatic essential oil whereas high humidity will cause it to cake. Sunlight, on the other hand, can fade its color. The containers should be tightly closed after use, and older stock should be used first. Exposure to air for a long time will cause flavor and aroma loss.