Add root beer after double bagging the pork in freezer bags. For a 24-hour marinating period in the refrigerator, tightly seal and arrange in roasting tins.
Drain pork, then rub with a lot of chipotle rub.
Wrap in plastic wrap and refrigerate for a further 12 hours. Prepare the smoker to 240 °F.
When the pork achieves an internal temperature of 140 °F, remove it from the plastic wrap and put it in the smoker.
Every 30 minutes, liberally baste or spritz meat with a mixture of 3 parts apple juice and 1 part bourbon until the internal temperature of the pig reaches 165 °F.
Cook the food until the internal temperature reaches 200 °F while it is wrapped in tin foil.
After removing the pork, store it for an hour in a cooler with the foil still on.
Pull the meat in its own juices and serve it when it has rested.