Article Selecting Yeast for Beginners As the saying goes, “brewers make wort, yeast make beer.” So, it is important — whether developing a new recipe or ordering a kit already assembled by a retailer — to put Already a member? Log In You'll Also Like Article MEMBERS ONLY What is Brewing? Brewing is the process of making beer — a fermented, alcoholic beverage made from grains. The most commonly used grain for brewing is barley, but there are others (including wheat, rye, oats Article MEMBERS ONLY Yeast Pitching and Propagation: Techniques If there’s one piece I can recommend for yeast propagation, it’d be an Erlenmeyer flask. An Erlenmeyer flask is easy to close from contamination and take accurate measures in.