Barbecue Sauce - cooking recipe

Ingredients

1 1/2 c. ketchup
2 Tbsp. mustard
1/2 c. brown sugar
1/4 c. vinegar
juice from 1 lemon
1/2 c. chopped onions
1/2 c. Worcestershire sauce
1/4 c. soy sauce (optional)
dash of sugar (optional)

Preparation

Saute onions in 1 tablespoon oil.
Add other ingredients.
Mix well.
Simmer for 20 minutes.