01 - Rinse the corned beef brisket under cold water and pat dry. Place it fat side up in the bottom of a large slow cooker.
02 - Sprinkle the included spice packet or pickling spice, bay leaves, peppercorns, and garlic evenly over the brisket.
03 - Scatter the onions, carrots, and potatoes around the brisket in the slow cooker.
04 - Pour in the beef broth and water, ensuring the brisket is nearly covered with liquid.
05 - Cover and cook on LOW setting for 7 hours until the brisket begins to tenderize.
06 - Carefully add the cabbage wedges on top of the other vegetables. Re-cover and cook for 1 additional hour until cabbage is tender and brisket is fork-tender.
07 - Transfer the brisket to a cutting board, tent with foil, and let rest for 10 minutes. Slice against the grain for maximum tenderness.
08 - Arrange the sliced brisket and vegetables on a serving platter. Spoon some cooking liquid over the top before serving.