Diacetyl & Pilsner Urquell

Have you experienced many Pilsners that suffered from DMS (creamed corn) flavor? The only beer I can report in this regard is Rolling Rock and they intentionally brew this beer to have perceptible DMS.

For my palate not all sulfur compounds are off-flavors (undesirable). When I purchase a batch of Jever and it has a whiff of Sulfur Dioxide (struck match aroma) I really enjoy that. Now on the other hand I would not enjoy Hydrogen Sulfide (rotten egg) but luckily I have never experienced that in any beer.

Cheers!

 

Just keep on drinking. The majority of the time (majority of batches) I too do not pick up diacetyl (butter) in that brand but on occasion I do.

But I should caveat that I am extremely sensitive to diacetyl. During a presentation at the National Homebrewers Conference we were served 4 beer samples that were 'doctored with off-flavors with diacetyl being one of them. I immediately recognized the beer 'doctored' with diacetyl when the glass was several inches away from my nose. That sample glass was repugnant to me at that distance. I had great difficulty actually sipping that beer (and it was a very small sip). The people on both sides of me were able to comfortably take several sips of their 'doctored' beers. I was both amazed and turned off by witnessing this; I wanted to yell out "how can you drink that s@#$!".

Cheers!

 

Does the yeast metabolize the diacetyl into something else? Or is it important to filter out the yeast with their belly's full of it?

Thanks for the brewer's perspective!

 

What you should do is buy a PU and two other pilsners (or so), and have them blind in a side-by-side. This will highlight the differences between the beers. See if you can pick out the PU due to the diacetyl in that context. Personally, I don't enjoy PU due to the diacetyl.

 

Yup, the yeast processes the diacetyl (given sufficient time in the primary fermenter):

“Yeast reabsorb diacetyl and convert it to acetoin and subsequently to 2,3-butanediol (Fig.4).”

https://www.whitelabs.com/sites/default/files/Diacetyl_Time_Line.pdf

Cheers!

 

Last month I was drinking a "session" American pale ale from a really, really highly regarded brewery (that I like). I was getting diacetyl in the beer and I couldn't enjoy it (like you, I suppose I'm sensitive and really not a fan). It was a bottled beer. I figured it was there by design for exactly the reasons expressed in the quote above due to it being a "session beer." I checked the reviews of this beer on BeerAdvocate. Not one person mentioned diacetyl. That made me wonder if it was unintended by the brewer and I had a bottle from a less than ideal batch. A few days ago I saw the beer on tap and ordered it out of curiosity. I still got diacetyl. Of course, there's the chance I could be misidentifying it, but now I feel like it's there on purpose. This is from an exacting brewer.

 

I think the biggest issue I take with Diacetyl is when a craft brewer tries to make a lager, which then turns out too buttery, and so they try to cover it with the title “Czech Pilsner,” instead of admitting they made a poor lager.

 

Yeah, strictly (stylistically) speaking there should be no perceptible diacetyl in an American Pale Ale. It is acceptable to have a bit of diacetyl in English Pale Ales (Bitter Ales); below from the BJCP style guidelines for Bitter Ales:

“Generally no diacetyl, although very low levels are allowed.”

Cheers!

 

Personally, I don't buy into the entire style guide permissibility thing. Don't take this the wrong way, but I think it's nonsense. Such a thing only exists like that because style guides were written to reflect specific beers. It's fine for homebrew competitions but shouldn't prevent a pro brewer from having diacetyl in a session IPA if he or she wants it. While I think it's fine if a brewer wants to have diacetyl in their beer regardless of style, I also don't like perceptible diacetyl no matter what the beer. It's fine by me if others do. I don't judge that according to style, I just don't enjoy it.

 

I would love to find and attend a class on different off flavors, what causes them, and have on hand examples. Right now if it’s not optimal I just know that it’s off a bit and I don’t like it, but I haven’t a clue what it is.

 

As they usually (lightly) do, but the Czech style of Light Lager tends toward that light touch of diacetyl -- can't recall just what brings it out in those beers. @hopfenunmaltz

 

Some lager yeast strains produce ‘extra’ diacetyl during the primary fermentation. One example is Wyeast 2001 (Pilsner Urquell H-Strain) which was mentioned by Michael Tonsmiere in the link I provide in post #17:

“The yeast I used (WY2001) is known for leaving some diacetyl (and it didn't disappoint)…”

Conducting a diacetyl rest towards the end of primary fermentation may mitigate the diacetyl.

My preferred solution when I brew my annual batch of Bohemian Pilsner is to utilize a lager yeast strain which does not produce ‘extra’ diacetyl (since I am not a fan of diacetyl in beer).

Cheers!

 

Chris this is well known; you post a lot on this topic.

Needless to say but not everybody (including me) view things exactly like you do.

Cheers!

 

Thank God Jack.

 

@hopfenunmaltz -- your voice has changed -- it has a really odd accent.

 

Back to the Urquell, I had a draft half-liter today when I met a good friend for our monthly lunch at an excellent Polish restaurant and there was definitely some diacetyl/butteriness in the beer. I didn't have any problem finishing the mug with our cabbage rolls, potato pancakes, and gulasch, but we only had one on a day when our respective family schedules could have easily called for a second.

 

Was that Polonia? Love that place. I usually have some at The Gingerman, and while I do get just a touch of diacetyl, it has never been overwhelming for me. I'm kind of hyper sensitive to diacetyl, so when I say just a touch, it is really nor that bad at all. Most people I drink with don't even notice it.

 

Never had DMS in anything except Westbrook Gose. Jack, it was the worst beer I have had. Sour and salty cream corn. Just... ewww. I also like the struck match flavor I get from my homebrewed lagers. I use the Ayinger strain and seem to get a hint of it in everything I have used it in.

 

Went to a picnic with a lot of beer today.
Ich folge dir nicht.