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I emailed this to the Mr. Beer beermaster, but I figured I'd ask here as well.

For my Doppelbock 7.0, this Sunday will make it 3 weeks in the keg for fermentation. The previous beer I made was a pale ale, and I let that one ferment 3 weeks also, and waited to bottle until the surface cleared up. The doppelbock krausen cleared up after about a week, and at about the 1.5-week mark I noticed the surface was speckled with a lot of bright white spots. I assumed it to be yeast colonies, but unlike the yeast colonies for the pale ale, these spots haven't changed since I noticed them. They haven't grown or shrunk. Is this yeast? Is it bacteria? Should I wait to bottle it until it goes away? Is the beer infected? I tasted it, and it didn't have any horrible flavors, though I did notice a decent amount of hop particles in the glass. Is that something that will settle as I bottle condition it? I have been able to keep the temperature between 66 and 68 degrees throughout, except that the first 2 days it was at 56 degrees.

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This really should be an update to your existing question, as I believe it's the same. –  Mlusby Apr 8 '11 at 18:58

1 Answer 1

up vote 2 down vote accepted

It sounds like you asking not so much about is it ready to bottle as far as being done fermenting, but what are the little white spots. I had a friend who's first batch did the same thing. This is what I did as I have never seen it before either.
I got my racking cane (sanitized) and with the little black end that keeps it out of the sediment, scooped a bit of one of the white blobs off and tasted it. It was simply sugary foam that didn't dissolve/pop all the way.
Bottom line: if it tastes and smells fine, and the gravity is good then it is ok to bottle.

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Yes, that was what I was asking. I tasted it and it seemed fine. I think I really need to get a clear carboy because it looked a lot different after I took off the lid - it was hard to see through the dark plastic. It actually looked more like a thin sud film. If I could have seen it well I wouldn't have worried about it at all. –  antman's clone Apr 11 '11 at 21:55

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