The Genetics of Beer Yeast

Scientists in Belgium took a look at over 150 beer yeast strains to trace their genetic lineage. Their findings show that beer yeasts began to differentiate themselves from their wild counterparts in the 1500s, which was around the time that monastic brewers began the practice of using the sediment from one batch to inoculate the next. Interestingly, this was long before Louis Pasteur discovered the role of yeast in fermentation.

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