3/4 c. salad oil
3/4 c. soy sauce
4 tbsp. Worcestershire sauce
2 tbsp. dry mustard
2 tsp. salt
2 tsp. coarse black pepper
1/2 c. wine vinegar
2 tsp. parsley flakes
2 cloves garlic, crushed

Marinate flank steak in above ingredients. Broil.