How to Make Freeze-Dried Strawberries

Written by michelle hogan
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How to Make Freeze-Dried Strawberries
Strawberries are ideal for freeze-drying because of their high water content. (Jupiterimages/ Images)

Freeze-drying food involves extracting water from food, not conventional freezing. Removing the water from food keeps it from spoiling for a long time and reduces the total weight of the food. This is why freeze-dried food is preferred by hikers, astronauts and others who need to carry food but don't want to carry a lot of weight.

Skill level:

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Things you need

  • 1/2 pound dry ice
  • 5 gallon cooler or bucket
  • Paper plates
  • Freezer bags
  • Gloves

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  1. 1

    Wash your strawberries by rinsing them in cool water and then drying them thoroughly on a clean kitchen towel.

  2. 2

    Remove the stems and slice the berries thinly.

  3. 3

    Place the sliced berries separately on a paper plate and then place them in a zip-style freezer bag. Press the air out of the bag without squishing the berries and seal the bag.

  4. 4

    Put a layer of dry ice on the bottom of your cooler or five-gallon bucket. Always wear gloves when handling dry ice.

  5. 5

    Place the bags with the berries on top of the dry ice. Stack the bags on top of each other if you have to.

  6. 6

    Replace the lid on the cooler or bucket, but don't seal it tightly. Some air needs to escape while the dry ice is evaporating.

  7. 7

    Seal the lid completely once the dry ice has evaporated. You can now keep the berries in the cooler or bucket with the lid sealed tight, or store it in a cool, dry place.

Tips and warnings

  • Always wear gloves when handling dry ice. Prolonged exposure to dry ice will freeze cells and cause injuries similar to a burn.

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