Yeast are microscopic, one-celled fungi that humans commonly use to make fermented products like beer, bread and cheese. Yeast obtain food from sugars, which they break down through a process called fermentation to produce the energy that they need to sustain life, as well as the by-products of carbon dioxide and alcohol. It is these by-products that give yeast-fermented foods their properties.Know More
Yeast need sugars to grow and multiply. They are capable of breaking down fructose, glucose and other monosaccharides, but they cannot use starch as a food source because they lack the enzymes to break it down, according to HowStuffWorks. However, enzymes found in some starchy food products, such as germinating barley, change starch into sugar that the yeast can use. This is how sugar is generated for use by yeast in the process of brewing beer.
There are many different species of yeast, but the one most commonly used in cooking and baking is called Saccharomyces cerevisiae, or brewer's yeast. This yeast is sold in a dry, inactive form from which most of the moisture has been removed. The yeast comes to life and begins reproducing when it is exposed to liquid and a source of sugar on which it can feed.Learn more about Dry Ingredients
According to Bread World, baker's yeast comes from the same species as brewer's yeast (Saccharomyces cerevisiae) but a different strain. Because yeast multiplies so readily, the manufacturing process is simple.Full Answer >
Unleavened bread contains no yeast, baking soda, baking powder or other leavening agents that allow the dough to rise, while leavened breads are made with rising agents that allow the dough to release gases and expand. Unleavened bread is flat and thin, and it resembles a cracker.Full Answer >
Using powdered sugar in a recipe that calls for granulated sugar means substituting 1 3/4 cups of powdered sugar for every 1 cup of granulated sugar the recipe calls for. However, baked goods such as cookies and cakes will not rise as well with powdered sugar.Full Answer >
White, granulated sugar packaged for consumers typically weighs 1, 2, 4, 5, 10 or 25 pounds. Other common sugars, such as confectioner's sugar and brown sugar, are usually sold in 2-pound bags.Full Answer >