Coat 4 pieces of osso bucco (inch thick pieces of veal or beef shin) in a combination of flour, salt and pepper. Brown off in a large pan. Once browned, remove from the pan and set aside. Add one diced onion, and three cloves of finely chopped garlic; and cook until aromatic. Next, add 1 can of tomatoes, diced; then place the beef on top, and cover with beef stock (or water).
Cook gently for 1-1 1/2 hours.