Bread unpredictable since the steam is not produced until the bread is baked. Steam leavening happens regardless of the raising agents (baking soda, yeast, baking powder, sour dough, beaten egg white) included in the mix. The leavening agent either contains air bubbles or generates carbon dioxide. The heat vaporises the water from the inner surface of the bubbles within the dough. The steam expands and makes the bread rise. This is the main factor in the rising of bread once it has been put in the oven. CO generation, on its own, is too small to account for the rise. Heat
History of California bread it was named California's Small Business of the Year by the Small Business Administration. They were acquired by Sara Lee in 2001. History of California bread The history of California bread as a prominent factor in the field of bread baking dates from the days of the California Gold Rush around 1849, encompassing the development of sourdough bread in San Francisco. It includes the rise of artisan bakeries in the 1980s, which strongly influenced what has been called the "Bread Revolution". There have been independent retail bakeries in San Francisco continuously since the California Gold Rush of 1849, and many