If bought from a butcher - place one shank per person in a casserole dish. Make up about half litre of gravy per shank (homemade is best but can be made with gravy granuals and stock cube, Oxo and chunky cut onion). Cover casserole dish and cook for at least 2 hours in oven. Meat should look like it is about to fall from the bones. Serve with mint or rosemary added to the gravy... ummm.