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
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