What is yeast?
Yeast is a tiny plant-like microorganism that exists all around us - in soil, on plants and even in the air. It has existed for so long, it is referred to as 'the oldest plant cultivated by man.' The main purpose of yeast is to serve as a catalyst in the process of fermentation, which is essential in the making of bread.
What is the purpose?
The purpose of any leavening agent is to produce the CO2 gas that makes bread rise. Yeast is no different. Yeast does this by feeding on the sugars in flour, and producing a waste product carbon dioxide in the process. With no place to go but up, this gas slowly fills the bred with tiny air pockets that gives the bread its fluffiness. A very similar process happens as bread rises. Once the bread has baked, this is what gives the bread its airy texture.The yeast cells in bread dough ferment sugars and produce gas (carbon dioxide). This makes the dough rise.
It is because of the yeast.
It reacts with the sugars to make it rise.
yeast
yeast is a microscopic organism that makes bread rise
Yeast turns some of the sugar in bread dough into alcohol and carbon dioxide. The carbon dioxide fills the bread with a lot of little bubbles. That makes it easy to eat. Without yeast bread would be like eating raw spaghetti.
You don't need yeast to make bread, but the result is unleavened bread. Yeast is a form of bacteria that produces CO2 bubbles in the dough as it consumes sugars. This makes the bread dough rise and the resultant baked bread is lighter and fluffier - leavened bread.
Yeast are tiny microscopic animals. Yes, ANIMALS. When you put sugar in bread, yeast eat the sugar and release Carbon Dioxide, causing the gas pockets to make the dough rise.
Yeast.
Baking yeast makes food rise and gives it a fluffy taste and feel to your food.
it doesn't rise up because the yeast makes the bread expand.
Yeast is the type of fungus used to make bread rise. Yeast consumes sugars in the dough and produces carbon dioxide gas, which creates the bubbles that cause the bread to rise and become fluffy.