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Essential Bread Leavening Agents
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Baker's Yeast
A living organism, Saccharomyces cerevisiae, that ferments carbohydrates in dough, producing carbon dioxide and alcohol, causing the dough to rise.
Sourdough Starter
A culture of lactic acid bacteria and wild yeasts that ferment dough, imparting a tangy flavor and causing it to rise.
Baking Soda
A base (sodium bicarbonate) that reacts with acids in the dough to produce carbon dioxide gas, leavening the bread.
Baking Powder
A combination of acid (usually cream of tartar) and base (baking soda) that reacts when moistened and heated to release carbon dioxide gas.
Potassium Bicarbonate
A leavening agent used as an alternative to sodium bicarbonate for low-sodium diets, it releases CO2 when reacted with an acid.
Steam
Water vapor expands during baking, creating air pockets in the dough's structure, contributing to the rise of certain breads like baguettes.
Beer
Contains both alcohol and carbon dioxide, which can contribute to the leavening and flavor profile of bread dough.
Whipped Egg Whites
Beaten egg whites trap air, adding volume and acting as a leavening agent in breads like challah.
Yogurt
The acid in yogurt can react with baking soda to produce carbon dioxide, while also adding flavor and moisture to the bread.
Ammonium Bicarbonate
Also known as 'baker's ammonia', it decomposes into CO2, water vapor, and ammonia gas when heated, used for very crispy baked goods like crackers.
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