INGREDIENTS
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3/4 cup cola
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1/4 cup Worcestershire sauce
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1 tablespoon vinegar
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2 cloves garlic
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1 teaspoon beef bouillon
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1/2 teaspoon dry mustard
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1 teaspoon chili powder
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1/4 teaspoon cayenne pepper
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2 medium onions
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1 1/2 pound beef roast or brisket
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1/2 cup ketchup
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2 tablespoons margarine