Posted on 09/18/2008 11:16:22 AM PDT by SunkenCiv
Yeast strains used today to brew lager have two genetic ancestors, not one as previously thought. The discovery may explain the origins of the two major categories of lager today, described in the trade as the "Saaz" beers such as Pilsner and Budweiser, and the "Frohberg" beers such as Orangeboom and Heineken. It turns out that both probably owe their origins to laws in 16th-century Bavaria that banned brewing in the summer because scorching heat ruined the ale that was brewed before the emergence of lager. Forced to produce their beer in the winter, brewers accidentally created conditions favouring the emergence of a hybrid yeast better suited to the cold. Researchers already knew that Saccharomyces pastorianus, now used to brew lager, is a hybrid produced through marriage between two yeast strains... The Group 1 yeasts, for example, were true hybrids, with one set of genes from each parent. The Group 2 yeasts had an extra copy of S. cerevisiae, making them "triploid" hybrids.
(Excerpt) Read more at newscientist.com ...
"You typical white grandma types just guzzle beer while you cling to your Bibles, clutch your guns, and discriminate against people not born in the United States."
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Is there a “Beer Ping List”? Seems like there ought to be . . . ;-)
Evolution at work to make better beer ping!
ping
Interesting. I had never heard that the Rheinheitsgebot (sp)forbid brewing in the summer.
Add me please if you start one. Thanks
Beer List ping. Add 2 please
Beer Ping!
A low to medium ping list aimed at all of us who, well, love our beer
FReepmail rzeznikj at stout or GOP_Raider to be added or struck from the list
Quaffing Sam Adams last nite.
So, is the first yeast strain still alive?
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