Mustard BBQ Sauce

This is a very simple recipe from my mother. She made it for us the last time my father smoked ribs and it was awesome.

1 cup chicken or beef broth
1 cup regular mustard (I like French's)
1/2 cup red wine or cider vinegar
1/3 cup brown sugar
3 tbsp butter or margarine
2 tbsp worcestershire sauce (I've also substituted Soy or Dale's sauce)
2 tbsp tomatoe paste
2 tbsp molasses (optional, I don't usually keep this in the pantry)
1 tbsp garlic powder
1 tbsp onion powder
1/2 tsp cayenne pepper (optional, depending on how much heat you like in your sauce)
1 tsp salt
1/4 tsp pepper

Combine all ingredients in saucepan and bring to boil. Reduce heat and simmer uncovered for at least 15 to 20 minutes. We usually let it simmer for an hour or so for a thicker sauce.