This week, Homemade is sharing an episode of a podcast called PROOF from our friends at America's Test Kitchen. PROOF is a podcast that takes us into the curious, unexamined corners of the food world, and in this episode they ask: Do burgers need ketchup? The birthplace of the burger, Louis’ Lunch, doesn’t think so. The family-run business has maintained a strict no-ketchup policy since they opened in 1895. We infiltrate this notorious ketchup resistance cell to try to understand why ketchup is such a polarizing condiment.

Learn more about your ad choices. Visit podcastchoices.com/adchoices