1/2 c. red wine vinegar
1/2 c. soy sauce
1/2 c. vegetable oil
1/2 tsp. black pepper
4 cloves of garlic, sliced
1 (3 1/2 lb.) London Broil

Combine first five ingredients in a large shallow dish, mixing well. Add steak. Turn to coat each side. Cover and refrigerate 12 hours. Remove steak from marinade. Grill covered over medium hot coals on each side until desired degree of doneness, basting occasionally with marinade. Remove from grill, wrap in foil after pouring excess marinade over steak. Let stand in marinade 5 minutes slice and serve.