Combine the lamb, beef, onion, garlic, and red wine in a bowl and mix lightly. Form into 8 to 10 patties about 3 inches/7.5 cm in diameter and no more than 1½ inches/3.75 cm thick.
Prepare a medium-hot fire in a gas or charcoal grill or lightly butter a large cast-iron skillet and preheat. Cook the patties until well done, turning once. Serve hot or warm with a sauce of your liking, suc