Place the meat in a 6-quart slow cooker pan.
In a medium bowl, whisk together the barbecue sauce ingredients.
Pour the BBQ sauce over the meat. Use your hands to ensure the meat is well coated.
Cover and cook on LOW for 8 hours or on HIGH for 5 hours.
Carefully remove the lid (hot steam will escape). Use two forks to shred the meat and mix it with the cooking juices.
Serve immediately.
