Dubble Bubble is a bran of bubble gum invented in 1928 by Philadelphia-based Fleer. Walter E. Diemer—an accountant at Fleer—enjoyed experimenting with recipes during his free time. In an interview a few years before his death he said "It was an accident". In 1937, the gum went on the market nationally. The gum only holds its flavor for a short time, then it becomes flavorless.