Place the brisket in a large roasting pan with a lid and add cold water to just cover.
Add the beer, onion, bay leaf, cloves, peppercorns and celery. Cover and place in a 300 degree oven for 3-4 hours (about 3/4 to 1 hour per pound of meat) until tender.
Remove and discard the onion and celery. Skim the excess fat from the liquid. Add the potatoes and carrots; put back in oven for 20 minutes.
Add the cabbage quarters and simmer an additional 20 minutes, or until the vegetables are done to the desired tenderness.
Notes: Additional water can replace the beer. Can be served with a sweet mustard glaze, honey mustard, or vinegar.
