No, we aren’t proposing any challenge! Here’s to your curiosity we bring before you a remarkable achievement in food science that happen to make sandwich scrumptious and edible, for a period as long as 2 to 3 years without refrigeration.
This pocket sandwich was developed for the U.S. army as a food source that would be convenient to have [in the field] and also be both delectable and nutritious. The technology for this high-end sandwich focuses on taking care of the entities like water and oxygen that are responsible for decay.
Check out the ingenious methods applied to increase the shelf life of a sandwich, when Dr George McGavin meets food scientist Michelle Richardson to uncover the secrets, in this BBC news section.