The higher the rating, the more bitter the beer will taste. Different hops are used to influence beers, giving the beers varied taste profiles. Mid-range hops such as Hollertau and Saaz are the most popular. Varieties of Hops 4. Yeast Yeast is a key ingredient that causes alcohol formation in beer as well as natural carbonation.
Yeast comes in hundreds of varieties, but beer is most commonly made with ale yeast or lager yeast.
Ale yeast is used in beer that is fermented at higher temperatures, whereas lager yeast ferments in colder temperatures. Yeast can be bought in packets or in liquid form at a homebrew supply store. All Rights Reserved. Terms under which this service is provided to you. Read our privacy guidelines .