With a shelf life of up to 25 years while unopened, the Freeze-Dried Chicken Breast Chunks Emergency Food from Augason Farms is a staple in any pantry. Preparation is simple just rehydrate and use like regular cooked chicken. No MSG added. Gluten-free. Up to 25-year shelf life when unopened. Best when stored in a dry environment between 55F and 70F. Per 16-oz. can. Cancer and Reproductive Harm- www.P65Warnings.ca.gov. Type: Dehydrated Food.