2 medium potatoes
1 tbsp. sugar
1 tsp. salt
1 pt. boiling water
3 tbsp. cornmeal
1/4 tsp. baking soda

Peel and slice potatoes. Add remaining ingredients. Let stand overnight in a warm place. In the morning, when it has foam on top, remove the potatoes and discard. Add 1/4 teaspoon of soda and thicken with flour. Let rise. Add 1/2 gallon (8 cups) flour to make a sponge. Add risen mixture and let rise again. Make out into 4 loaves. Grease pans well.

Bake in moderate 350°F oven for 45 minutes or more.