Melt butter in large, heavy non-aluminum saucepan over medium heat. Add onion, celery, green pepper and garlic and cook 6 to 7 minutes or until tender, stirring frequently.
2
Step 2
Stir in remaining ingredients and bring to a boil over high heat. Reduce heat to low, cover, and simmer 30 minutes or until sauce is thickened, stirring occasionally.
3
Step 3
Remove sauce from heat and discard lemon slices and bay leaf. Process in food processor or blender until smooth.
4
Step 4
Refrigerate up to 2 weeks. Use sauce on chicken, ribs, frankfurters, or hamburgers during grilling, broiling or baking.