The candy bar was created in 1911 by a York confectioner called Rowntree's, and Nestle launched it in the U.K. as the “Chocolate Crisp” in 1935. In 1970, Rowntree's struck a deal with Hershey’s for the manufacturing and distribution rights of Kit Kats in the U.S., and even though Nestle bought out Rowntree's in 1988, it was legally bound to honor Hershey's exclusive rights.