Low-alcohol beer This is the preferred method because raising the temperature this late in the brewing process can greatly affect the flavor of the brew. If brewers decide to convert their brew to a non-alcoholic brew they must consider the volume of liquid they have lost during the removal of the alcohol. Typically the volume is reduced by roughly 4%, and to compensate water is added. Another tip would be avoiding using sugar from maize; this simply increases the alcohol content without adding to the flavor or body of the beer. Once the alcohol is removed, one proceeds with the normal finishing
Brewing of time; brewing yeast strains act slower, but tend to tolerate higher alcohol concentrations (normally 12–15% abv is the maximum, though under special treatment some ethanol-tolerant strains can be coaxed up to around 20%). Modern quantitative genomics has revealed the complexity of "Saccharomyces" species to the extent that yeasts involved in beer and wine production commonly involve hybrids of so-called pure species. As such, the yeasts involved in what has been typically called top-cropping or top-fermenting ale may be both "Saccharomyces cerevisiae" and complex hybrids of "Saccharomyces cerevisiae" and "Saccharomyces kudriavzevii". Three notable ales, Chimay, Orval and Westmalle, are fermented