White chalky stuff

[Johannes]

I've had a white filmy,chalky paint looking film on top of some of my secondary ales from time to time. I thought is was mold and now iam not sure. I was told it could be old yeast cells. has anyone else experienced this stuff on top of the secondary after having sat for a few weeks? Thanks

 

[Tim]

I have what sounds like the exact same "thing" on top of my stout which has been in the secondary for about 3 weeks now. I don't see anything growing so I can only assume it's not mold. I'm going to taste and bottle it this week, hopefully it turns out OK as I'm looking forward to it.

 

[Lou]

it is most likely clumps of yeast surrounded by tiny bubbles... this was discussed recently here: https://www.homebrewtalk.com/showthread.php?t=6811&highlight=white+secondary

 

[FrewBrew]

I actually had the same thing on my last lager in the 2ndary.... Im pretty sure it was just yeast.

 

[Johannes]

Thanks guys for the feedback. I am much relieved. Sorry about starting another thread, but I just joined and didn't know this came up before. Thanks again.

Johann