Preheat oven to 150°C/300°F/Gas 2.
Heat the oil in a heavy casserole dish and brown the meat on all sides. Add the vegetables, garlic, herbs and liquid. Season and cover.
Place in the oven and cook for 2½ – 3 hours or until tender.
Slice the meat and serve with the vegetables and cooking juices, and a helping of creamy champ mash, if desired.