Barbeque Sauce

This came from my Grandma Upton. It's technically red in color, but has a strong vinegar flavor. My mother puts it on cut up chicken or pork and it makes great sandwiches. 1/3 cup onion, chopped 1/2 cup water 1/2 cup vinegar 1/8 tsp salt 1/2 tsp pepper 2 tsp wet mustard 2 tbs brown sugar 2 tbs worchestershire sause 1 cup ketchup

Cook onions and water until tender. Add all other ingredients and cook about 5 minutes.