Carolina Style BBQ Pulled Pork

Name: Carolina Style BBQ Pulled Pork
Ingredients: 2 c yellow mustard; * 1 1/2 c apple cider vinegar; * 1/2 c water; * 1 c sugar; * 1/2 c brown sugar; * 1/4 c chili powder; * 1/2 tsp cayenne pepper; * 2 tsp black or tri colored pepper; * 1/4 c butter; * 2 tsp soy sauce; * 2 tb “liquid smoke”; * 2 tsp red pepper flake (for making the hot version); * for the barbecued:; 8-9 lb “boston butt” pork roast; * 2 tb olive or vegetable oil; * 1 1/2 c chicken broth, divided; * 1/4 c red wine; * 1 tsp garlic powder; * 1 tb “liquid smoke”; * salt and pepper - about 1 tsp each