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Freeze drying
? TBD
Low temperature dehydration process
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Wikipedia

Freeze drying, also known as lyophilization or cryodesiccation, is a low temperature dehydration process that involves freezing the product and lowering pressure, thereby removing the ice by sublimation. This is in contrast to dehydration by most conventional methods that evaporate water using heat.

Subclass of
Food drying
References
Wikidata