The Freeze-drying process has several advantages over other food preservation methods.
Frozen foods retain fresh flavor and nutritional value, but require low temperature storage conditions. Dehydrated and canned foods are shelf-stable, but high-temperature processing can degrade flavor, texture and nutritional content. Freeze-drying combines the best of these processing methods. It preserves the freshness, color and aroma similar to frozen food, while providing the shelf-stable convenience of canned or dehydrated food. Freeze-dried foods taste fresh, look fresh and weigh less than fresh. Freeze dried food stays fresh too. Freeze-dried foods can be stored at room temperature, without deterioration or spoilage. This is because freeze-drying and packaging remove both water and oxygen - the two primary causes of food deterioration.