Quick Answer
Vacuum sealing is not strictly required but recommended for freeze-dried food to preserve flavor, texture, and nutrient content. Airtight containers or bags can also be used, but vacuum sealing helps to remove oxygen and prevent spoilage.
Importance of Oxygen Removal
When freeze-dried food is exposed to oxygen, it can absorb moisture from the air, leading to the loss of flavor and texture. Vacuum sealing helps to remove oxygen and prevent the reabsorption of moisture. This is especially important for foods high in fat and oil content, such as meats and nuts, which are more susceptible to oxidation.
Best Practices for Vacuum Sealing Freeze-Dried Food
To effectively vacuum seal freeze-dried food, use a vacuum sealer or a food saver with a strong vacuum pump. Remove as much air as possible from the container or bag before sealing to prevent the formation of ice crystals, which can damage the food. Store the sealed containers or bags in a cool, dry place, such as a pantry or cupboard.
Alternative Storage Methods
While vacuum sealing is the preferred method of storage for freeze-dried food, airtight containers or bags can also be used. Use containers with tight-fitting lids or bags that are specifically designed for storing freeze-dried food. Store the containers or bags in a cool, dry place and keep them away from direct sunlight and heat sources.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.