How to keep onion powder soft?

To keep onion powder soft, store it in an airtight container in a cool, dry place away from moisture and direct sunlight. You can also include a small food-safe desiccant packet to absorb any humidity. Additionally, avoid exposing the powder to heat or steam, which can cause clumping. If it does clump, you can break it apart gently with a fork or sift it before use.