2 pounds pork shoulder 12-ounce can of root beer 18-ounce bottle of barbeque sauce Place the pork tenderloin in a slow cooker and pour the root beer over the meat. Cook on low for six hours or until pork shreds easily with a fork. Drain juice. Shred the pork and place it back in the slow cooker. Pour the barbecue sauce over the pork and stir to combine. Serve on hamburger buns.