13 April 2018 Sourdough Starter Bread Posted on April 13, 2018 by Durgan 13 April 2018 Sourdough Starter Bread.13 April 2018 Sourdough Starter Bread Sourdough Starter Bread. Sourdough yeast from the air starter. It gets fed daily with whole wheat flour kept at room temperature. It is finally very active.Notice the CO2 bubbles. About two pounds is used to make two loves of sourdough bread. It is much a learning experience.