ArticleA Peek into the World of the Single Celled Fermentation is everything to beer. Without it we’d have sweet barley tea to share with friends or something to put on our pancakes. Fermentation is where the alcohol and CO2 that makeAlready a member? Log InWritten by Nico FrecciaYou'll Also Like Article MEMBERS ONLY Hop Extracts - Advanced Brewing These hop extracts roughly fall into two categories, those primarily intended to add bitterness and those where aromatics are the goal. 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.