With a new filling and a new crust, American innovator Monroe Strause changed pie forever. Strause considered pie to be the “Great American Dessert,” and deemed it superior to just about every other food. One problem in particular vexed him. He was supremely unsatisfied with cream pies, which were thick, heavy, and reminded him of cornstarch pudding. So he began experimenting, and Chiffon Pie was born.
https://www.atlasobscura.com/articles/american-pie-history