While the famous cake’s true origin is up for debate, its popularity can be traced back to the Waldorf Astoria New York, where legend says the chef had a recipe he kept secret until a guest requested it. The chef sent the recipe to the guest along with a pricey invoice. As possible retribution, the guest shared the recipe far and wide, helping the cake become known across the U.S. and the world for its red color and rich flavor. Decades later, red velvet treats are now ubiquitous and varied, ranging from the traditional red velvet cake to cookies and even funnel cake.