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-   -   What on earth did my yeast do???? (http://www.homebrewtalk.com/f13/what-earth-did-my-yeast-do-56250/)

benxrow2002 02-23-2008 08:50 PM

What on earth did my yeast do????
I just came across something funky with my yeast. Up to this point I had only used dry yeast in all my beers....although this last batch I brewed up a Belgian Wit and decided to go liquid and used the smack pack. After 3 weeks in the primary (did not use a secondary) my beer basically had a Krausen of yeast cake floating on top. I double checked my FG and it was exactly where it should have been. The beer smelled great and tasted very good too. When I racked it, there was still a yeast cake at the bottom of the fermenter too, just not as thick as it usually is. Basically about 75% of the yeast cake was floating on top and only 25% fell to the bottom.

What's up with that?

mrkristofo 02-23-2008 09:50 PM

It's a top-cropping yeast. That's perfectly normal, and characteristic of belgian yeasts.

malkore 02-24-2008 02:55 AM

Wyeast 2565 Kolsch will do the same thing. not all yeasts behave the same way.

Chris_Dog 02-24-2008 12:20 PM

I think the consensus is to wait until the Krausen falls before racking. With the Kolsch I brewed this didn't happen until I lowered the temp for lagering.

malkore 02-24-2008 03:58 PM

the consensus is don't rack out of primary until the terminal gravity has been reached (or within a couple points)

premature racking can easily stall fermentation, leading to off flavors, as well as too much diacetyl (not enough yeast cake left to clean up the buttery flavors)

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