Trim the joint of all skin and nerves. Roll in flour, cover the joint with fat ham, bacon, or dripping. Well season, according to taste; add two glasses of port wine (if desired). Seal joint in bag; allow plenty of space in the oven. Allow for joint of three pounds, one and a quarter hours; seven pounds, two and a half hours; fourteen or fifteen pounds, four hours. This must be cooked in a moderate oven (300 Fahr.).