Years ago, Guy developed a sauce for a burger and told a fellow chef that you have to really slather it on “or else you’re a jacka**.” And that’s how the name Donkey Sauce came to be! It’s Guy’s go-to condiment: He starts with mayo, then ramps up the umami, mixing in roasted garlic, mustard, Worcestershire sauce, salt and pepper. Serve it with burgers and dogs at your next cookout or try it in the apps on the following pages.