Yeast

Yeast is a type of single-celled fungus widely used in baking and brewing. It consumes sugars and produces carbon dioxide and alcohol through fermentation. In baking, the carbon dioxide causes dough to rise, creating light, airy bread. In brewing, the alcohol and flavors develop as yeast ferments the sugars in grains or fruit. Yeast plays a crucial role in developing the texture and taste of many baked goods and alcoholic beverages. It is a natural, living organism that has been cultivated by humans for thousands of years to produce a variety of food and drink products.