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

Combine all ingredients in blender and pour over flank steak in ziploc bag (gallon size). Marinate 4 to 5 hours in refrigerator. Broil 4 to 5 minutes on each side. Marinade can be reused.