01 - In a medium mixing bowl, whisk together the apple cider vinegar, lime juice, chopped chipotle peppers, adobo sauce, minced garlic, ground cumin, dried oregano, smoked paprika, ground coriander, ground cloves, salt, and black pepper until well combined.
02 - Place the trimmed beef chuck pieces into the slow cooker insert. Pour the prepared marinade evenly over the beef, ensuring all pieces are thoroughly coated.
03 - Scatter the roughly chopped onion and bay leaves over the coated beef. Pour the beef broth around the edges of the slow cooker, avoiding pouring directly over the beef and onion mixture to keep the seasoning intact.
04 - Secure the lid on the slow cooker and cook on the low setting for 8 hours or on the high setting for 4 to 5 hours. The beef is ready when it is fork-tender and shreds apart with minimal effort.
05 - Carefully remove and discard the bay leaves. Using two forks, shred the beef directly in the slow cooker, mixing the shredded meat thoroughly with the accumulated cooking juices.
06 - Serve the barbacoa hot with warm tortillas, steamed rice, or alongside your favorite toppings such as pickled red onions, fresh cilantro, and lime wedges.