Freeze drying is a food preservation process that removes moisture from foods through sublimation. First, the food is frozen solid. Then, a vacuum is applied to drop the pressure and remove the frozen moisture from the food. What's left is a stable product that weighs just a fraction of the original!

Freeze drying is a food preservation process that removes moisture from foods through sublimation. First, the food is frozen solid. Then, a vacuum is applied to drop the pressure and remove the frozen moisture from the food. What's left is a stable product that weighs just a fraction of the original!

Freeze drying is a food preservation process that removes moisture from foods through sublimation. First, the food is frozen solid. Then, a vacuum is applied to drop the pressure and remove the frozen moisture from the food. What's left is a stable product that weighs just a fraction of the original!