Yeast Guide - Beer Advocate There are literally hundreds of varieties and strains of yeast. In the past, there were two types of beer yeast: ale yeast (the "top-fermenting" type, Saccharomyces ...
酵母菌分類 cerevisiae型：球形與卵形(如啤酒酵母Saccharomyces cereviisiae). ellipsoideus型 ：橢圓形(如葡萄酒酵母Saccharomyces ellipsoideus). pastorianus型：香腸形.
