4 lb. Commerial Corned Beef (soaked in water for an hour and rinsed) cooked for 75 minutes (with one 12 oz. beer, three cups water, one stalk celery halved and one half onion, sliced, and seasoning packet) at High pressure, 20 minute Natural Release; Meat removed from pot, tented with foil and allowed to rest while the Vegetables were cooked in the beef cooking liquid for 5 minutes, High pressure, Quick Release.