Choose two 3 oz. proteins and mix and match your toppings. All burgers come with Roma tomato, leaf lettuce, shaved onions, American cheese, pickles, and house sauce. Choose Your Bun: Potato Bun, Lettuce Wrap. Choose Your Patty: Angus Beef, Lamb, Grilled Chicken Breast, Crispy Chicken Breast, Turkey, B4 Burger (Vegan).