All jars of American Dream Nut Butter now are imprinted with a Lot # and Expiration Date on the bottom of the jar; keep in mind that we handcraft each jar in small batches so expirations will vary from one jar to the next.Unopened American Dream Nut Butter will remain fresh for up to a year, while opened jars retain peak freshness for about 6 months. Your handcrafted butters can be stored at room temperature and do not need to be refrigerated – although we highly suggest chilling Mint Dream if you’re a fan of fudge, trust us on this one!