INGREDIENTS
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large zip-top bag
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1/3 cup molasses
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1 tablespoon Worcestershire sauce
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1 teaspoon garlic salt
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1 teaspoon liquid smoke
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2 lb beef flank steak
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1 cup barbecue sauce
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1/4 cup raspberry preserves
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3 tablespoons spicy brown mustard
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1 tablespoon chipotle hot pepper sauce
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aluminum foil
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6 Bakery hamburger buns