No documented founder or formal establishment record has been identified for National Whipped Cream Day. The oldest surviving evidence is a holiday-listing page captured in November 2013, which dates the listing rather than the day.
Sta-Whip and a pitch to the can makers
Aaron S. Lapin spent the early 1940s selling something else. Sta-Whip was a wartime substitute for whipping cream made mostly from light cream and vegetable fat, and for bakers and other commercial customers he offered a crude aerating gun he called a Fount-Wip.
In 1947 he told a group of doubtful can manufacturers that this was the beginning of pressure-propelled packaging. Reddi-wip went on sale the following year, first through St. Louis milkmen, and spread from there across the United States and Canada.


