eddie's low-fat tangy bbq.sauce

Ingredients

• 2 tablespoons butter
• 1/4 cup minced onion
• 1 tablespoon minced bell pepper
• 1 cup water
• 1 cup ketchup
• 2 tablespoons white wine
• 1 teaspoon salt
• 1/4 teaspoon pepper
• 2 tablespoons worcestershire sauce
• 2 tablespoons lemon juice
• 1 teaspoon yellow mustard
• 1 teaspoon celery seed
• 1/2 tablespoon cornstarch
• 1 tablespoon water
• 2 tablespoons brown sugar