Peel,cut into cubes and boil 1 med. potato in about 3c water. Let stand in
          liquid until cool. Drain, reserving potato water. Mash the potato and set
          aside 1/4c.

          In a large bowl or crock, mix 2c flour,2tbl sugar, and 1tsp (not quick
          rise). In a saucepan, combine 1c potato water and 1c water, warm to about
          100 degrees. Pour over flour mix and add the 1/4c mashed potato, mixing
          well.

          Cover with waxed paper then with foil. Crimp foil around edges, but not to
          tightly-the starter has to breath. Set aside at warm room temp. for 2
          days.

          Uncover and stir in 2tbl flour. Cover it back up and let sit 1 more day
          before using.

          To feed: Every 2-3 days, stir in 2tbl to 1/2c flour (depending on how
          often you use it). When you add the flour also add a pinch of sugar and just
          enough warm water to keep it about like thick pancake batter.

          You may refrigerate it to make it go dormant. When ready to use again,
          bring to room temp and feed as before.