Covers the science and history of baking powder, enabling you to create your own leavening power through basic kitchen chemistry. Includes how to make sour milk, buttermilk, and sourdough starter, plus the author's hardwood ash baking experiments. The recipes and science behind them will be of interest to homesteaders, preppers, do-it-yourselfers, homeschoolers, living historians, and historical reenactors. Contains a glossary, a list of resources, and 54 modern and historical recipes utilizing 20 different baking powder alternatives. Also available in paperback.