2) Cover the top of the pan with two sheets of parchment paper, then with aluminum foil. (The tomato juice will react unpleasantly with the aluminum foil if they touch.)
3) Bake for 3 1/2 hours, or until the meat is tender. Remove the meat from the pan and keep it warm. Place the pan on two burners and boil the vegetables and simmer sauce over medium heat for another 30 minutes, or until thickened.
4) To finish, slice the meat across the grain and serve with the vegetables.