01 - Rinse the corned beef brisket under cold water and pat dry with paper towels. Place the brisket fat-side up in the bottom of a 6-quart or larger slow cooker.
02 - Sprinkle the included spice packet or pickling spice evenly over the top of the beef brisket.
03 - Arrange the quartered potatoes, carrots, onion wedges, and smashed garlic cloves around and on top of the beef, distributing them evenly in the slow cooker.
04 - Pour in the beef broth and water, ensuring the beef is just submerged. Add the bay leaves and season with a few grinds of black pepper.
05 - Cover and cook on low heat for 6 hours, until the beef is fork-tender and vegetables are cooked through.
06 - Gently place the cabbage wedges on top of the meat and vegetables during the last 2 hours of cooking. Cover and continue cooking until cabbage is tender but not mushy.
07 - Carefully transfer the brisket to a cutting board and let rest for 10 minutes before slicing. Slice the meat against the grain into thin strips for maximum tenderness.
08 - Serve sliced corned beef alongside the tender vegetables. Ladle some of the cooking liquid over each portion for added moisture and flavor.