STARTER: cut 2/1/2 C new non-mealy potatoes in thin slices, place in bowl, sprinkle ove them 1 T sale, 2 t sugar, 2 T white cornmeal, add 4 C boiling water and stir till salt disolved. let stand, covered, 15 hours, squeeze out potatoes. Drain liquid into bowl and add, stiring till blended, 1 t baking soda, 1 1/2 t salt, 5 C sifted flour. Beat (forever) place in greased bowl in warm place to rise till light. Bubbles should come to surface and increase in size 1/3 (1 1/2 hrs). Scald 1 C milk and when lukewarm, add 2 T butter, add to sponge with 5 -6 6 C sifted flour. Knead 10 min, shape into loaves, let rise, covered, to near double in size. Bake 350 1 hour.