Foodsaver Vacuum Sealer Reviews When you start to traveling with your food storage vacuum sealer, one wonders what is the difference between the freeze-dried foods and dehydrated foods. Here we will discuss ways to freeze your own food. Freeze dried foods are frozen, then dried. Freeze drying removes the water, no flavor.Then freeze dried foods retain virtually all their fresh food taste, vitamins and nutritional content. It also weighs less cost.Freeze dried foods have 98% of its water removed. This greatly reduces the weight of food, which makes it easier to handle and less expensive to transport. Dehydrated foods are high quality foods that have been picked ripe, cleaned and trimmed to leave only the best parts. These foods are then dehydrated were choosing 98% of its moisture is removed. This is done by a highly sophisticated process of drying. Which are packaged in tins of high resistance enamel, and sealed with a special inert atmosphere to ensure the best possible life stage. However, drying does not affect the nutritional value of foods. Dehydrated foods retain their nutritional value because the vitamins were not cooked in the original process.