Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     1/3  cup           wine vinegar
     1/4  cup           ketchup
   2      tablespoons   soy sauce
   1      teaspoon      salt -- ( optional )
   2      teaspoons     Worcestershire sauce
   1      teaspoon      prepared mustard
     1/4  teaspoon      garlic powder
     1/4  teaspoon      pepper

Preparation:

Combine marinate ingredients in a glass measuring cup. Whisk until blended. Pour over meat and cover for and refrigerate for about 6 hours. Good for chuck roast, flank steak or etc.