1/2 c. soy sauce
1/4 c. oil
1/4 c. Worcestershire sauce
Garlic powder

Mix together all ingredients except garlic powder. Pour into a marinating dish. Place desired meat (sirloin, flank steak, etc.) in dish and sprinkle with garlic powder. Let meat marinade at least 6-8 hours. Grill meat. Boneless chicken breasts work well with this marinade, just add 1 tablespoon of sugar.