In a skillet, cook bacon until crisp; reserve 1/4 cup drippings. Set the bacon aside. Add sugar, cornstarch, salt and pepper to drippings. Stir in vinegar and water; bring to a boil, stirring constantly. Cook and stir for 2 minutes. Add the beans; reduce heat. Cover and simmer for 15 minutes or until beans are heated through. Place in a serving bowl; top with bacon. Yield 10-12 servings.