Bar-b-q sauce- Quick

1 large onion finely chopped

2 Tbs. oil

2  8 oz cans tomato sauce

2 c water

1/4 c lemon juice

1/4 c brown sugar

1 Tbs. Worcestershire sauce

1 tsp salt

1/8 tsp pepper

1 tsp liquid smoke

Cook onion in oil  in a large pot until clear, add remaining ingredients and simmer 10 min. Use immediately or refrigerate.