Recipes: Barbecued burgers

Preparation:    Preparation time: 25 mins Cooking time: 15 mins Serving: 6 Ingredients:     Sauce: 1 cup ketchup 1/2 cup packed brown sugar 1/3 cup sugar 1/4 cup honey 1/4 cup molasses 2 teaspoons prepared mustard 1-1/2 teaspoons Worcestershire sauce 1/4 teaspoon salt 1/4 teaspoon liquid smoke 1/8 teaspoon pepper  Burgers: 1 large...