Place ham in a large container. Add water to cover, and soak 24 hours. Drain. Scrub ham 3 to 4 times in cold water with a stiff brush, and rinse well.
Place ham, fat side up, in a large roasting pan. Pour vinegar over ham; sprinkle with cloves. Cover with lid or aluminum foil.
Bake at 325° for 4 hours or until meat thermometer registers 140°. Remove from oven, and cool slightly. Slice ham, and serve with hot biscuits.