INGREDIENTS
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Barbecue Dipping Sauce:
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1 cup homemade or bottled barbecue sauce
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2 tablespoons ketchup
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1 onion, grated
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2 tablespoons lemon juice
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Dash of Tabasco sauce, or to taste
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Kebabs:
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3 boneless, skinless chicken breasts (about 1 3/4 lb.), cut into 1-inch cubes
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2 tablespoons Worcestershire sauce
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1 tablespoon lemon juice
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1 tablespoon olive oil, plus more for brushing
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1 1/2 onions, quartered, layers separated
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Salt and pepper