Barbecue Sauce - cooking recipe

Ingredients

1 medium onion
2 Tbsp. butter
2 Tbsp. vinegar
2 Tbsp. brown sugar
4 Tbsp. lemon juice
1 c. ketchup
2 Tbsp. chopped parsley
1/2 Tbsp. prepared mustard
1/2 c. water
3 Tbsp. Worcestershire sauce
pinch of salt
pinch of cayenne pepper

Preparation

Brown onion in butter.
Add remaining ingredients.
Simmer 30 minutes.