"The instructions given here are for a standard 22-inch Weber kettle barbecue. Grilling times and vent adjustments will vary with different types of barbecues...."
INGREDIENTS
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1/4 cup (1/2 stick) unsalted butter
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6 tablespoons minced onion
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1 1/3 cups cider vinegar
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1 1/3 cups ketchup
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1 cup (packed) dark brown sugar
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1 teaspoon Worcestershire sauce
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1/4 teaspoon cayenne pepper
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3 tablespoons coarsely ground pepper
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3 tablespoons dark brown sugar
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3 tablespoons paprika
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2 tablespoons salt
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1 teaspoon cayenne pepper
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1 cup cider vinegar
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1/2 cup water
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1 tablespoon Worcestershire sauce
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1 tablespoon coarsely ground pepper
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1 tablespoon salt
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2 teaspoons vegetable oil
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1/2 teaspoon cayenne pepper
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2 untrimmed boneless halves of pork shoulder (also known as Boston butt; about 6 pounds total weight)
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12 soft hamburger buns with sesame seeds, warm