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The Brülosophy Podcast

The Impact of Post-Fermentation Oxidation

The Brülosophy Podcast

Marshall Schott

Brew, Brewing, Science, Beer, Leisure, Hobbies

4.91.2K Ratings

🗓️ 23 January 2018

⏱️ 65 minutes

🧾️ Download transcript

Summary

Purported as being responsible for beer staling and reduced shelf-life, oxidation that occurs once fermentation is complete, typically during packaging, can be difficult to avoid and is the bane of many a brewer's existence. In this episode, contributor Malcolm Frazer joins Marshall to discuss post-fermentation oxidation, ways it can be avoided, and some exBEERiments they've performed on this oft discussed brewing variable. | Relevant Articles | Normal vs. High Oxidation At Kegging Normal vs. High Oxidation At Kegging - Impact of Age & Storage Temp Flushing With CO2 vs. Direct Filling When Bottling From Kegs

Transcript

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0:00.0

It's kind of crazy to think that as recently as 30 years ago, if you wanted to make beer in your home,

0:04.8

you'd have to break the law.

0:06.7

Thankfully, in 1978, it became legal on the federal level for people to home brew,

0:10.9

but unfortunately, this didn't include everyone as certain states

0:13.8

continued to restrict this natural right.

0:16.6

But this all ended in 2013 when the last two holdouts, Mississippi and Alabama,

0:21.0

passed laws making it okay for people to make beer at home.

0:24.6

For the first time since prohibition, it was legal to homebrew in all 50 of the United States.

0:30.8

This was due in large part to the dedication and hard work of the American Home Brewers Association.

0:36.0

In addition to continuing the fight for our right to brew, they're committed to growing the hobby by coordinating events such as Big Brew for National Homebrew Day and Homebrew Con.

0:44.6

We're proud to say that the Brulosophy Podcast is brought to you by the American Homebrewers Association

0:49.8

and encourage all of our listeners to support the organization that has done so much for this

0:54.3

hobby by becoming a member today. Hey, you're listening to the Brullosophy podcast. I'm your, Marshall Schott, and on this episode,

1:13.7

contributor Malcolm Fraser and I will be talking about an issue worried about by

1:17.9

pretty much every professional and probably most home brewers as well.

1:21.5

Yeah, oxidation, especially on the cold side seems to be the

1:25.3

number one fault I find it when judging beer and it really is the bane of of

1:31.2

Brewers because it can strip so much character from hoppy beers or even multi beers

1:36.2

you know? Yeah and and oxidation is is kind of blamed for being the kind of the

1:46.7

having a huge impact on shelf stability and imparting. I think classically you know when I when I first started getting into the beer

1:50.4

evaluation and judging thing oxidation was commonly referred to as like imparting a cardboard or a wet cardboard like characteristic.

1:58.0

Yeah, we'll get into that for sure, but that seems to be overly simplistic because it does so much more sometimes good but mostly bad.

...

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