baking yeast
Baking yeast is a source of B vitamins (particularly thiamine and niacin) and contains dietary minerals including selenium and chromium. When consumed in fermented bread, much of the yeast biomass is metabolized during the fermentation and baking process.
About
Baking yeast is a single-celled fungus, typically Saccharomyces cerevisiae, that ferments sugars to produce carbon dioxide and ethanol. The most common commercial form is baker's yeast, a domesticated strain cultivated and harvested for culinary applications. It exists naturally in grape skins and on grain husks but is now cultivated industrially through controlled fermentation processes.
Baking yeast is sold in several formats: fresh (compressed cake), active dry (large granules with dead cells removed), and instant (fine granules with improved dispersion). Each form has distinct moisture content and fermentation characteristics. The yeast cells remain metabolically active until exposed to temperatures above 140°F (60°C), at which point enzymes denature and the cells die.
Culinary Uses
Baking yeast is essential for leavening bread, pastries, and other fermented baked goods. It produces carbon dioxide gas during fermentation, creating the rise and airy crumb structure characteristic of yeasted doughs. Beyond leavening, fermentation develops complex flavors through organic acid production and enzyme activity that breaks down proteins and starches. Baking yeast is used in artisan bread production, pizza dough, croissants, brioche, cinnamon rolls, and sweet doughs. It is also employed in some beer and wine production, though those typically use specialized strains.