Herbert Hoover’s favorite food was a unique one still sometimes found on the Thanksgiving table today: Sweet potato baked with marshmallows. So, who came up with this interesting dish? Well for starters, sweet potatoes go way back as a staple food in the Americas. Marshmallows weren’t first manufactured until the late 1800s but by the early 20th century companies were trying to think of clever ways to market the fluffy treat. In 1917, the earliest instance of a recipe for sweet potatoes baked with marshmallows was published. Lastly, if you think it sounds strange, all we have to say is don’t knock it till you try it!