Jiffy Pop is a popular brand of popcorn currently owned by ConAgra Foods. The product combines unpopped popcorn kernels and oil with an aluminum pan and folded aluminum foil lid. As the pan is heated, the popping corn causes the foil to unfold and puff up.
Fred Mennen of Indiana is credited with developing the product in 1958 after five years of experimentation. Mennen began marketing Jiffy Pop in 1959, and within one year it had reached the national U.S. market.