Process Drying Process OVERVIEW OF FREEZE – DRYING PROCESS Step 1IntroducedFresh or cooked foods are flash frozen. Step 2ExpandedThe frozen products are placed in a vacuum chamber and water content is gently drawn out of the cell as steam, via sublimation. Step 3ExpandedThe freeze dried food is sealed in moisture and oxygen proof packaging to ensure freshness until opened. Step 4ExpandedWhen the water is replaced. The food regains it original fresh flavor aroma, texture and appearance.