Lay the ham in a 1 inch deep baking tray. Spread mustard over the top and sides of the ham. Spread brown sugar over the mustard. Sprinkle ground cloves over the ham. Pour the Coca-Cola or root beer into the bottom of the pan. Cover the pan with aluminum foil.
Bake at 300 degrees for 3-4 hours for a whole ham or 2-3 hours for a half ham. Baste the ham every 15 minutes with the liquid in the pan.