INGREDIENTS:
1/3 c. wine vinegar
1/4 c. ketchup
2 tbsp. cooking oil
2 tbsp. soy sauce
1 tbsp. Worcestershire sauce
1 tsp. dry mustard
1 tsp. salt, optional
1/4 tsp. pepper
DIRECTIONS:
Combine ingredients and pour over London Broil. Marinate in refrigerator overnight.