Temperature: Gas Mark 3, 170oC, 325oF
Heat the oil in a large saucepan, add the joint and brown all sides. Place in a deep ovenproof casserole with a lid. Arrange the onion wedges, celery, turnips, parsnips and bay leaves around the joint and season well. Add stock, cover and cook for 2 hours.
Serve with creamy colcannon mash.