And a debate about potato salad… Welcome to our summer cookout spectacular! We talk with renowned burger historian George Motz about the history of the hamburger, and about the wide range of regional burgers across the country, many of which are unknown outside their areas. Then we get an incredible burger recipe from Chef Jehangir Mehta, inspired by Indian street food, that’s made with 25% mushrooms. Finally, our old friend J. Kenji Lopez-Alt stops by for a debate that’s sure to spark conversation at your next socially-distanced outdoor gathering: Should potato salad be called a salad?   Get 500+ more great Sporkful episodes from our catalog and lots of other Stitcher goodness when you sign up for Stitcher Premium: www.StitcherPremium.com/Sporkful (promo code: SPORKFUL). Transcript available at www.sporkful.com.