Bread was originally unleavened until the Egyptians discovered adding [[yeast]] (a by-product of [[beer]] production), would cause the bread to rise in the manner of most modern loaves. Most modern breads now use yeast as a leavening agent although unleavened bread is still produced (some [[Jewish]] breads and "flatbreads" such as chapatis). | Bread was originally unleavened until the Egyptians discovered adding [[yeast]] (a by-product of [[beer]] production), would cause the bread to rise in the manner of most modern loaves. Most modern breads now use yeast as a leavening agent although unleavened bread is still produced (some [[Jewish]] breads and "flatbreads" such as chapatis). |