Tootsie Roll
A candy that was air dropped to the Marines who were cut off at the Chosin Reservoir during the Korean War. It kept many of the Marines from starving to death, as all of the other food they had required heating, due to the 30o below zero temperatures. Tootsie Rolls could be put inside clothing, close to the skin, and it would thaw out enough to be eaten. In addition, as their trucks and jeeps were being shot up by the Chinese, the Marines would repair the holes by placing a chewed up Tootsie Roll into the hole, where it would immediately freeze and create a weld.