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Once the food has gone through the freeze-drying process, it can be stored for 20 - 30 years. But there are two components that will cause our food to spoil more quickly: water and oxygen. Freeze dried food will last much longer if it is sealed in a #10 can or a Mylar bag. These containers will keep moisture out of the food so that it wonât reconstitute and will be ready to use when you need it. You can also add an oxygen absorber to the container to keep your food bacteria free for years to come.
Make sure to know the shelf life of your prunes to avoid eating spoiled fruit. In the pantry and fridge, dried prunes will last 6 to 12 months. The freezer can extend the shelf life of a dried prune. Dried prunes stored in the freezer can last 12 to 18 months.