Place corned beef in a 5 quart dutch oven and cover with water. Add spice packet (usually included with corned beef), onion and garlic.
Heat to boiling then reduce to simmer. Cover and cook until beef is tender about 2 hours.
Remove beef to warm platter and keep warm. Skim fat from the broth and add
cabbage. Heat to boiling, reduce heat, simmer uncovered 15 minutes until tender.