How to Store Freeze-Dried Food
Store freeze-dried food in mylar bags with oxygen absorbers, or airtight jars, kept cool, dark and dry. Because it is so low in moisture, it lasts for years to decades when oxygen and light are kept out.
Why storage matters
Freeze-dried food is almost completely dry, which is what gives it a decades-long potential shelf life. But it readily reabsorbs moisture and degrades with oxygen and light, so how you store it decides how long it truly lasts.
The best method
Seal freeze-dried food in mylar bags with oxygen absorbers (about 300cc per gallon), or in airtight jars with an absorber. Squeeze out excess air before sealing, and store somewhere cool, dark and dry. Avoid temperature swings and humidity.
Portioning and use
Store in meal or batch sizes so you do not expose your whole supply each time you open one. Once a bag is opened, use it within a reasonable time or reseal it well, since it starts reabsorbing moisture from the air.
Frequently asked questions
How long does freeze-dried food last?
Sealed in mylar with oxygen absorbers and kept cool and dark, many freeze-dried foods last 10 to 25 years. Once opened, use them within weeks to months as they reabsorb moisture.
Can I store freeze-dried food in jars?
Yes. Airtight jars with an oxygen absorber work well for smaller amounts and let you see the contents. For the longest life and bulk storage, mylar bags with absorbers are best.