Spicy BBQ Chicken

INGREDIENTS

• 2 tablespoons vegetable oil
• 1/4 cup onion, finely chopped
• 1 clove garlic, minced
• 3/4 cup ketchup
• 1/3 cup vinegar
• 1 tablespoon Worcestershire sauce
• 2 teaspoons brown sugar
• 1 teaspoon dry mustard
• 1/2 teaspoon salt
• 1/4 teaspoon black pepper
• 1/4 (5 ounce) bottle hot pepper sauce
• 1 (3 pound) chicken, cut into pieces