Quick bread leavening process, agents (one or more food-grade chemicals—usually a weak acid and a weak base) are added into the dough during mixing. These agents undergo a chemical reaction to produce carbon dioxide, which increases the baked good's volume and produces a porous structure and lighter texture. Yeast breads often take hours to rise, and the resulting baked good's texture can vary greatly based on external factors such as temperature and humidity. By contrast, breads made with chemical leavening agents are relatively uniform, reliable, and quick. Usually, the resulting baked good is softer and lighter than a traditional yeast bread. Chemical
Bread in culture Abrahamic religions of Judaism and Christianity. During the Jewish festival of Passover, only unleavened bread is eaten, in commemoration of the flight from slavery in Egypt. The Israelites did not have enough time to allow their bread to rise, and so ate only unleavened bread matzo. In the Christian ritual of the Eucharist, bread is eaten as a sacrament either as a symbolic representation of the body of Christ or, as in the Catholic liturgy, as a real manifestation of the body of Christ. Specific aspects of the ritual itself, including the composition of the bread, vary from denomination to