Ingredients
2 cup1 small (1
2 cup) onion, sliced1
2 cup ketchup1
4 cup Worcestershire sauce3 tablespoons firmly packed brown sugar
2 tablespoons chopped chipotle chiles in adobo sauce
1 teaspoon finely chopped fresh garlic
1 teaspoon salt
1
4 teaspoon pepper1 tablespoon white vinegar