Fermenting under pressure

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Fermenting under pressure

Post by jimmayhugh » Sun Sep 20, 2020 10:25 am

I use a Brite tank and spunding valve when I'm making IPAs as it allows me to ferment under a wider temperature range while keeping unwanted esters to a minimum.

I searched the site and didn't see a similar topic as it applies to this hobby, so I thought I'd bring it up.

It seems to me that if you are interested in minimizing ester production for vodka and gin, this may be useful.

Any thoughts?

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Re: Fermenting under pressure

Post by Expat » Sun Sep 20, 2020 10:40 am

It's funny that you mentioned this. Just yesterday I was watching a presentation video from my local brew club on this very topic.

To me it brings to mind the idea of pushing the needle both ways, increasing pressure to reduce esters for neutral, and maybe finding other ways to do the opposite.

Have to get a spare keg and a spunding valve to experiment with.

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Re: Fermenting under pressure

Post by bluedog » Sun Sep 20, 2020 12:31 pm

My first instinct would say that increasing the pressure on the fermenter would increase stress on the yeast, and create more esters. Any idea why the opposite happens?

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Re: Fermenting under pressure

Post by seabass » Sun Sep 20, 2020 3:05 pm

I doubt you'd notice much difference in final product assuming you're already minimizing yeast stress and have good pitch rates. That said, it's pretty damned easy to set a spunding valve and experiment.

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