BEER LAGERSLagers need cooler temperatures for the yeast in the beer to ferment and brew effectively, usually between 46 and 55⁰F. The yeast used is also different in this type of beer, being a bottom fermenting yeast that doesn’t float to the surface of the beer but simply sinks to the bottom of the brew. Lagers are usually lighter in colour, drier and much less alcoholic than ales.Lager can also be subdivided into several different types of beer, although there are much less than ales. Subdivisions include bock, pale lager and Vienna lager, with further categories including pilsner and dry lager beers.