Pizza with a three-year shelf life
A slice of prototype pizza, in development to be used in military MREs (meals ready to eat), is shown in its packet with a smaller, freshness-keeping packet known as an oxygen scavenger. The pizza is being developed at the U.S. Army Natick Soldier Research, Development and Engineering Center in Natick, Mass. (Steven Senne / Associated Press)
A packet containing a slice of prototype pizza. (Steven Senne / Associated Press)
Researchers, from left, Mary Scerra, Priscilla Bitopoulos and Lauren Pecukonis prepare prototype pizzas in a kitchen at the U.S. Army Natick Soldier Research, Development and Engineering Center. (Steven Senne / Associated Press)
Food technologist Michelle Richardson looks into an oven where prototype pizzas cook in a research kitchen. (Steven Senne / Associated Press)
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Food technologist Tom Yang cuts a prototype pizza. (Steven Senne / Associated Press)
Prototype pizza slices in their packets, before being sealed. (Steven Senne / Associated Press)