SERVINGS 3 UNITS US
1 tablespoon olive oil
1 garlic clove, minced
1 tablespoon Worcestershire sauce
1 tablespoon balsamic vinegar or 1 tablespoon white vinegar
1 teaspoon yellow mustard
1 tablespoon soy sauce
Mix all ingredients together and place steaks into freezer bag with marinade, preferably overnight.
The original recipe used balsamic vinegar.Seems I never had that on hand so I just used white and listed that in the recipe, but balsamic is definitely better.
Source: (1) Jean Spin