All of our herbs and spices are carefully dehydrated, not cooked. No fumigants, anti-caking agents, fillers or preservatives are used. We grind, blend and package our products in small batches to ensure freshness and the best quality. Upon receiving, we suggest the following:Place in a glass or ceramic container with a tight lid.Keep in a cool, dry place away from direct light.For long-term storage keep in refrigerator or freezer for optimum freshness. Some settling in the packet and humidity may produce caking that is easily broken up with a spoon. ENJOY!Our products are packaged in food grade plastic for practical purposes.