Yep, I have picked up from a many of the Cotton mills down in NC and it never failed, there was a pork sandwich shop on one side of all of those big mills. And all did the Apple Cider Vinegar, crushed red peppers,Brown Sugar, butter Salt cayenne Pepper and Black pepper BBQ Sauce and all I can say is, those sandwiches with pulled pork & coleslaw on steamed bun, where beyond delicious. I have not been down there for about 17 or 18 years now, and I sure do miss those places.
Combine the following ingredients in a medium size saucepan. Using medium heat bring ingredients to a slight boil and thereafter continue boiling for 5 or 6 minutes. Stir constantly until it begins to thicken.
1 cup apple cider vinegar
1/2 cup packed light brown sugar
2 tbls real butter
1 tsp salt
1/8 tsp cayenne pepper
1 tsp fresh crushed black pepper
Use in the last 30 minutes as the temperature in the pit begins to diminish (below 170 degrees) . The brown sugar will have the tendency to make this sauce (tomato based sauces will do the same) char/blacken if used while the pit is still quite hot.