Freeze drying is a food storage method which allows keeping foods for years without spoiling.  Foods that are put into the dry freezer are quickly frozen with low temperature application, up to -40 degrees. Then after, the ice around the food is evaporated away by vacuum effect. Consequently; foods such as fruits, vegetables, red meat, fish, chicken, dairy products, bakery products etc. get ready in couple of hours and stored in packages during long years.

In Industrial freeze dry facilities, firstly, foods are frozen with cooling systems, with cold air application up to -40 degrees. After being stored in frozen warehouses for a while, the foods are put into the freeze dry machine. The ice which is in the food passes into the vapor phase by heating under vacuum.(16-21 hours)