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
Crustless bread Crustless bread Crustless bread is bread without crusts. Panko is made from such a bread, which is produced by passing an electric current through the dough. British food group RHM manufacture a crustless bread targeted at children called Hovis Invisible Crust, which is produced by baking the bread at low temperature. Other bread manufacturers have released crustless bread, with the crusts removed. Measurable nutritional loss can result from omitting crusts from bread. Bread crusts are higher in the antioxidant pronyl-lysine than the inner portion of the bread. Crusts from darker breads, in particular, contain higher amounts of this antioxidant, which