Originally Posted by midlantic
I think these types of pilsners are allowed to have small amounts of diacetyl, but pilsner U does not. At least as far as I would say. I haf recently gone through the BCJP course using pilsner u for that style and tasted none. In addition the audio of Gordon Strong judging it he mentioned that there was no diacetyl present. He did say that maybe they had cleaned it up over the years which suggests maybe it used to have some.
This thread suggests that the Pilsner U that you get closer to the brewery has a noticeable amount of diacetyl than what's available now in the US.http://www.beeradvocate.com/communit...-in-us.167447/
Whether that's intentional or a side effect of something else going on, I don't know. I wouldn't be surprised if it's the result of a greater acceptance of it overseas than in the US, but it's certainly possible it just has to do with something else they're doing to ship it to the states.
At any rate, it's certainly OK if someone wants a bit of diacetyl in that version of pilsner, or not have it as the case may be.