Army dreams of long-life sandwich
Making the classic peanut butter and jam combination battle-ready for soldiers is the aim of army scientists, who have developed sandwiches that will keep without refrigeration for three years.
After four years of research of "anytime, anywhere snacks", the army has come up with formulas for two sandwiches pepperoni and barbecue chicken that use chemical and natural preservatives to lock in moisture and inhibit bacteria and mould growth.
