Retort packaging is a specialized method of food preservation that combines the benefits of traditional canning with the convenience of modern, flexible materials. It is most commonly seen in the form of a “retort pouch”—the flexible, silver-lined bags used for ready-to-eat meals, soups, and pet food. How It Works The process is essentially “canning in a bag.” Instead of using a rigid metal can or glass jar, food is sealed inside a flexible, multi-layered laminate pouch. The entire package then