make a 50-50 slather of mustard and worcestershire sauce and smear it on, then coat with your rub of choice. Wrap it up and put it in the fridge overnight. Take it out about 2 hours before you're putting it in the smoker. Get you smoker going, bring it up to 225 to 250. Rub the butt again and place it in the smoker with a probe thermometer. Every few hours, spray it/mop it with a 50-50 mix of apple cider and apple cider vinegar. When the probe hits 165, double wrap it in foil and put it back in the smoker. When it hits 195, pull it off, and place in an unused cooler, wrapped in a blanket. Let it rest for 1-2 hours, then pull it.