why freeze dried?

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Freeze-drying, also known as lyophilization, is a food preservation technique that removes water from food to extend its shelf life and make it easier to store, transport, and handle. Freeze-drying has many benefits, including:
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Retains nutrients
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Freeze-dried foods retain up to 97% of their original nutrients, which is much higher than other drying methods.
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Preserves foods that other methods can't
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Freeze-drying can preserve foods that other methods can't, like most dairy and egg products.
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Reduces weight
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Freeze-drying removes about 98% of a food's water content, which can reduce its weight by up to 90%. This is especially useful for people who need to carry their own food for long periods of time.
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Doesn't use heat or preservatives
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Freeze-drying doesn't use heat or added preservatives, so the nutritional value of the food remains nearly unchanged.
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Re-hydrates well
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Freeze-dried food is more porous than oven-dried food, so it rehydrates better and faster.
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NASA developed freeze-drying to send food on long-duration spaceflights, where reducing the weight of water and oxygen helps prevent food from deteriorating.
