Fast food - is a unique product. Food is any other format without a refrigerator in a few days turns into a waste, but a burger can last much longer. Previous experiments showed that white bread with a chop can remain intact for at least three years, but a new record. A resident of Utah David Whipple back in 1999 bought a hamburger but forgot about it and left in a coat pocket. Two years later, he found purchase in its original form. Since then, it took 14 years, but vkusnuypirogek has not changed, which proves that a burger can remain edible for decades.