1 qt. lukewarm water
1 pkg. dry yeast
2 tsp. sugar
4 c. flour

Pour water in a crock about twice as big as the mixture, then add yeast and sugar to soften.

Stir in flour. Cover with a clean cloth. Let rise until mixture is light (about 2 days). Mixture thins as it stands, add flour. As used replace with equal amounts of flour and water.