BBQ Sauce

BBQ Sauce
1/2 Cup chopped onions
1 can tomatoe sauce − 8 oz.
1 Cup water
1 1/4 Cup ketchup
2 Teaspoon brown sugar
2 Teaspoon prepared yellow mustard
1 Teaspoon olive oil
1 Teaspoon worcestershire sauce
1 dash tobasco sauce
Combine ingredients, cover and simmer for 30 mins.