Barbecue Sauce - cooking recipe

Ingredients

1/2 c. oil
3/4 c. chopped onion
3/4 c. ketchup
1/3 c. vinegar or lemon juice
3 Tbsp. sugar
3 Tbsp. Worcestershire sauce
2 Tbsp. mustard
1 Tbsp. salt
1/2 Tbsp. pepper
3 to 4 slices lemon or lime

Preparation

Put all ingredients in pot and simmer for 30 minutes.