1. Pre-heat the oven to 180C / 350F / Gas 4. 2. Heat the butter and oil in a large flame-proof casserole and cook the meat for 10 minutes, until browned all over. Remove from the plan with a slotted spoon. 3. Add the onions and Mushrooms to the pan and fry until softened. Add the flour and stir well so that the flour absorbs the fat. 4. Return the meat to the pan, add the stout, bay leaf and Sugar. Stir well. 5. Cover and cook in the oven for about 2 hours or until the meat is tender.