water for american premium lager

[craigmw]

Just serve the funky beer after serving the good one. Nobody will notice the difference if they've been enjoying enough of the first!

 

[bigdaddybrew]

I think you may have encouraged bacterial Sourness/acidification due to the three hour mash and you were already acidifying on the low end. Change the name to Tart Summer Pilsner and don't look back.

 

[ajdelange]

I am skeptical it's an infection but I'm not ruling it out just yet.

It is brilliantly clear. I just tapped the other keg and it's a totally different beer. No lemon tartness at all.

That pretty convincingly points to an infection in the one keg. Happens sometimes.

 

[schematix]

Just about killed the good keg. Well received.

 

[schematix]

Update: keg #1 has passed. Keg #2 is on me to finish.