How Freeze-Drying Works - HowStuffWorks
Aug 22, 2002 Freeze-drying, or lyophilization, is like suspended animation for food. You can store a freeze-dried meal for years and years, and then, when you're finally ready to eat it, you can completely revitalize it with a little hot water. Even after all those years, the taste and texture will be pretty much the same. That's some trick!
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