Remember, There's a Reason You Don't See Bacon-Cheese Lamb Burgers
Ketchup and American cheese aren't exactly naturals for lamb, since the meat has a stronger flavor (some call it gamy, which isn't necessarily a bad thing, we promise) than beef and therefore demands a bit more oomph from its supporting cast. Middle Eastern and Greek flavors—think feta or curry—are ideal. We're also taken with Boston chef Jamie Bissonnette's Lamb Burger with Blue Cheese, Olives and Tzatziki. He mixes blue cheese and finely chopped olives into the ground meat, forms patties and grills them. He spreads a yogurt sauce like this one on top.