Preheat the oven to 250 degrees F.
Put the corned beef into a large roasting pan with a lid Add the pickling spice, garlic, onion, pickling spice, beer, and whiskey. Cover with lid and place in the oven.
Braise 3 hours, turning the meat once. At the end of the 3 hours, add the carrots, celery, potatoes, and cabbage. Cover again and place back in the oven for an additional 1 hour. Remove from the oven.
Remove meat from liquid and slice across the grain. Serve with the vegetables and cabbage.
Tip-I have made it with many different kinds of beer and whiskey and it is all good, so if you only have Jim Beam and Miller light on hand don’t let that stop you!