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The Brülosophy Podcast

Beer Off-Flavors: Acetaldehyde

The Brülosophy Podcast

Marshall Schott

Brew, Brewing, Science, Beer, Leisure, Hobbies

4.91.2K Ratings

🗓️ 21 May 2019

⏱️ 75 minutes

🧾️ Download transcript

Summary

Often described as having a green apple flavor and mispronounced by many, acetaldehyde is an off-flavor that is a normal part of any experienced beer evaluator's vernacular. In this episode, contributor Malcolm Frazer sits down with Marshall for a deep dive into this curious characteristics as well as to discuss the results of a fascinating xBmt on the subject. The Brülosophy Podcast is brought to you by Imperial Yeast who provide brewers with the most viable and fresh yeast on the market. Learn more about what Imperial Yeast has to offer at ImperialYeast.com today. | Relevant Article | Acetaldehyde Off-Flavor xBmt: http://brulosophy.com/2017/02/06/off-flavor-series-acetaldehyde-exbeeriment-results/

Transcript

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0:00.0

Hey everybody, Marshall here to share some really cool news with you.

0:02.3

I trust at this point you've all heard about fake yeast.

0:05.1

This is that Norwegian ale strain that can ferment cleanly at temperatures as high as no joke,

0:09.6

100 degrees Fahrenheit, which is about 38 degrees Celsius, absolutely crazy stuff.

0:14.4

Well last year, Imperial Yeast dropped A43 Loki, their Kvake strain as a seasonal release,

0:20.3

which meant we all had a pretty small window to get our hands on some.

0:23.0

Not anymore. Imperial yeast recently announced they're making A43 Loki a year-round strain due to popular demand.

0:30.0

They're excited about it. I'm super excited about it.

0:32.0

I've had some amazing

0:33.2

beers fermented with Loki at terrifyingly warm temperatures. It is amazing

0:37.3

stuff. Go grab some A43 Loki and see what all the fuss is about for

0:41.3

yourself. As anyone who's spent any amount of time drinking beer with a group of brewers, sitting at a table with a judging partner, or interacting with craft beer nerds online knows all too well, there are a number of things that can go wrong with beer.

1:04.9

Numerous off-flavors people like to throw around as proof of their pallets prowess,

1:09.4

one of which is commonly said to taste like green apple.

1:12.9

You're listening to the BrewLosophy Podcast,

1:14.6

I'm your host Marshall Shot.

1:15.6

And in this episode, contributor Malcolm Fraser is with me

1:18.3

to talk about an off-lavor that gets thrown around quite a bit

1:20.8

in brewing circles, a curious thing, seeing as it's also regularly mispronounced.

1:25.8

As a cedar. I said as a maneldman minute. Just say it loud and proud and just stick with it.

1:36.0

Yeah, right.

1:37.0

I mean, I've heard, it's acetaldehyde, of course, and not acetaldehyde or a cetylaldehyde or a cetylaldehydeide or a cedal-dahide,

...

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