Once opened they will last: up to 1 year in a Zip Lock bag with refrigeration once opened but not re-hydrated up to 60 days in a zip lock bag without refrigeration once opened, but not re-hydrated up to 5 days in the fridge once they are re-hydrated. These are perfect for storing and using for many years! You can have great tasting food in seconds with no mess and no waste - and it doesn't matter if the power goes out!! You can open just one can at a time and in just 2 hours cook one or as many of these as you want however you would cook any other fresh canned food. Perfect for camping, boating, traveling, or at the cabin.