INGREDIENTS
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1 2/3 to 1 3/4 pounds ground sirloin
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1 medium onion, cut into chunks
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2 ribs celery from the heart of the stalk, cut into 2-inch pieces
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1 green bell pepper
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1 large egg plus a splash of milk, beaten
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1 cup plain bread crumbs
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2 tablespoons grill seasoning (recommended: Montreal Steak Seasoning by McCormick)
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1 cup smoky barbecue sauce
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1/2 cup tomato salsa
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1 tablespoon Worcestershire sauce
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Vegetable oil or extra-virgin olive oil