Long considered a staple in the diets of the health conscious, soy has been added to the recommended list of foods by the American Heart Association. Soy products such as tofu and soy beverages are most commonly packaged in aseptic cartons, according to the Aseptic Packaging Council. With this packaging, soy products can be stored, unrefrigerated, for up to six months, thanks to the revolutionary aseptic processing and packaging system -- the same technology used to fill kids' drink boxes.