Barbecue Sauce - cooking recipe

Ingredients

1/4 c. vinegar
1/2 c. water
1 1/2 tsp. salt
1/4 c. butter
1 large onion, sliced
2 Tbsp. brown sugar
1 Tbsp. prepared mustard
1/2 tsp. pepper
1/2 c. ketchup
1 lemon (squeeze juice)
2 Tbsp. Worcestershire sauce
1 1/2 tsp. liquid smoke

Preparation

Mix vinegar, brown sugar, salt, butter, lemon juice, water, Worcestershire sauce, mustard, pepper and ketchup.
Bring to a boil for 20 minutes (uncovered).
Add onion and liquid smoke. Bake for 1 hour at 300\u00b0 to 325\u00b0.