From the HBD Archive
From: (Mark Stevens) <stevens@stsci.edu>
Subject: re: SN yeast
Date: 1990-02-27 15:25:06 GMT

In Homebrew Digest #366, Florian B. writes (in reference to
Sierra Nevada using only one strain of yeast):

>Where do you get your information? From their PR people? And if so,
>how can you trust them?

It's probably more likely than unlikely that they *DO* use only one
strain of yeast. A couple months back I attended a talk given by
Gary Heurich (owner of Olde Heurich Brewing Co.), he talked about
why he chose Pittsburgh Brewing Co. to do his contract brewing
and he discussed their yeast strains. Seems that they use only
*ONE* yeast strain for every beer, from Olde Frothingslosh to
their best contract ambers, and that the yeast itself is a very
good, pure strain. Heurich said that if a brewery does NOT use
only a single strain that they risk infection of the strains
by each other and that by restricting your brewing to that single
strain you can better maintain its purity. This seemed to make
a lot of sense.
- --Mark Stevens
stevens@ra.stsci.edu


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