What is „freeze drying“?
Freeze-drying is a technical drying process that takes advantage of water‘s unique physical characteristics. Frozen water transforms directly from a solid state into gas (sublimation) in a vacuum chamber. Freeze-dried meals are made by instantly freezing foods and then drying them in a vacuum chamber.
With this method, water in foods does not melt, but can escape as steam. All that is required to prepare them is boiling water. Their light weight, simple preparation and fuel savings makes freeze-dried foods the meal of choice for mountain climbers, trekkers and those on expeditions.
Today, these kinds of foods are quickly becoming a part of all outdoor activities. The most important advantages are:
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Weight saving
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Fuel saving
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Simple preparation
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Long shelf-life (5 years)