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 bottom of the slow cooker. 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 seasoned beef. Pour the beef broth around the edges of the beef and onion mixture, avoiding pouring directly over the top.
04 - Cover the slow cooker and cook on the low setting for 8 hours or on the high setting for 4 to 5 hours, until the beef is fork-tender and shreds effortlessly.
05 - Remove and discard the bay leaves. Using two forks, shred the beef directly in the slow cooker, then stir the shredded meat to absorb all the cooking juices.
06 - Serve the barbacoa hot with warm tortillas, steamed rice, or your choice of toppings such as pickled onions, fresh cilantro, and lime wedges.