In a mixing bowl, add ketchup, bourbon, maple syrup, apple cider vinegar, Worcestershire sauce, soy sauce, garlic, onion powder, and pepper.
3/4 cup ketchup, 1/2 cup bourbon, 1/8 cup maple syrup, 1 tablespoon apple cider vinegar, 1 tablespoon soy sauce, 1 tablespoon Worcestershire sauce, 2 teaspoons garlic paste, 1 teaspoon onion powder, 1/8 teaspoon pepper