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Old 12-15-2011, 05:58 PM   #1
Oct 2011
Posts: 76

How do breweries come up with their own yeast strands? I know Rogue came up with the "Pacman" yeast strand and Guiness has their own under lock and key.

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Old 12-15-2011, 07:32 PM   #2
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Apr 2011
Minneapolis, Minnesota
Posts: 7,881
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I may be totally wrong, but I'm under the impression most commercial breweries use commercially available strains, or have trained a specific strain in their brew house to develop a house strain. Some of those 'house strains', like Rogue's Pacman, are available seasonally. Others, like wyeast London ESB (reported to be fuller's house strain) are available year round.
Not sure if that's what you were asking, but hope it helps.
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Old 12-15-2011, 08:34 PM   #3
Jan 2011
Sheffield, South Yorkshire
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Basically they get some yeast that's commercially available and use it for many generations, acid washing occasionly.

It'll develop over time as it gets used to the brewery conditions and processes.

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