Pork and beans are cooked together in a slow cooker for mutually beneficial results (If you don't have a slow cooker, you can do it in a pot in the oven.) As the pork shoulder and barbecue sauce braise in the oven, the sauce soaks up the pork juices while the pork tenderizes. Then, beans are added to soak up the deeply concentrated sauce. The recipe uses store-bought barbecue sauce enhanced with the smoky heat of canned chipotles in adobo and brown sugar, which helps glaze the pork. Because every barbecue sauce is different, taste and adjust yours as needed. (For a more acidic sauce, add apple cider vinegar with the beans, or you can increase the sweetness with added sugar.) To serve, slice the pork or shred it into pulled pork.