Granola is a healthy treat that you can sprinkle on your favorite ice cream or yogurt, and also a nutritious snack to have between meals. Long-term storage of granola allows you to have a snack that can be eaten during emergency scenarios. Your method of preserving granola will determine the length of time in which it will stay fresh.
Purchase airtight containers. Airtight containers reduce the amount of oxygen that comes in contact with the granola, which keep the granola fresh.
Store granola in the refrigerator. Placing your granola in airtight containers stored in the refrigerator preserves the granola efficiently. The lower temperature of the refrigerator will prevent the ingredients from spoiling. The shelf life is also determined on how cool you maintain your refrigerator, and the make of your refrigerator.
Purchase a vacuum sealer. Vacuum sealers are small appliances that will remove the air from a bag or container which increases the shelf life of the dried item, according to preservefood.com. You can purchase a vacuum sealer from your local hardware or department store. They can range anywhere from $30 to more than $100.
Purchase bags specifically for vacuum sealing. These bags typically withstand harsher conditions than typical plastic sandwich bags. Vacuum bags usually come as one long bag. Cut the bag based on the length and amount of granola you plan to preserve. Cut an extra 3 to 5 inches of the bag to allow for room to seal.
Place one end of your bag in the sealer and follow the instructions for the sealer. Typically it is a matter of pushing a button. Most sealers have a two-part process. The vacuum removes air and then the sealer seals the bag.
Place the granola in the newly sealed bag. Once you have sealed one side of the bag you will place the granola in the other side. When you have the amount of granola you want in the bag, put the opening in the vacuum sealer and press the button. Any extra air will be removed from the bag and it will seal.
Store the vacuum-sealed granola in the refrigerator or in a cool, dark place.