Found this mustard sauce from a guy on an outdoor site i post on. It was one that his mom made up. I have my own but when i tried his, it is now part of the rotation in my smoker and grill. I use it on chicken as well.Here it is:
Buzz's Moms Sauce
3/4 cup yellow mustard
1/2 cup honey
1/4 cup cider vinegar
2 T ketchup
1 T brown sugar
2 tsp worcestershire sauce
1 tsp hot sauce
put everything in a saucepan and heat on medium and stir well and mop the stuff on the last hour of cooking time.