Created by Sue on March 8, 2013
Step 1: Preheat the oven to 350 degrees F.
Step 2: Heat the oil in a large flameproof casserole and brown the meat on all sides; remove from pan and drain.
Step 3: Add the onions and cook for 3-4 minutes or until tender and just starting to brown, stirring constantly.
Step 4: Add the celery, carrots, and potatoes and cook over medium heat for 3-4 minutes or until they start to get some color.
Step 5: Add the flour and cook for 1 more minute; blend in the stock and Guinness, mixing until combined.
Step 6: Bring mixture to a boil, stirring constantly.
Step 7: Add the bay leaf, thyme, sugar.
Step 8: Mustard, tomato paste, and season to taste with the salt and pepper.
Step 9: Place the brisket on top, and cover tightly; place in the oven and cook for 2 1/2 hours or until meat and vegetables are tender (adjust the seasoning and add a pinch more of sugar if necessary).