Franconian Beer Message Board

Untergärig vs. Obergärig - top/bottom fermenting naming + history in Czech
Posted by Nick B. on 2015-01-19 05:04:33
Yes, you're right about how both yeasts work at high temperatures, but "ale" yeast doesn't work below X° C. "Lager" yeast does not work "well" at high temperatures though, producing more off-flavours.

I have never brewed a lager at home, only ale. So my direct experience with the fermentation is limited to ale. When I re-use yeast from one batch to the next, I collect it from the bottom of the fermenter, not the top of the beer. Your report of the clumping of ale yeast is new to me, I think.

Interesting.

I think Barry is questioning why or how lager yeast started to be used in Bavaria. What I have always heard is that it evolved from the practice of cold fermentation. I think he means that the cold fermentation began because brewers knew it would work better with otherwise problematic yeast?
 
Followups:
                             Untergärig vs. Obergärig - top/bottom fermenting naming + history in Czech by Mosquit on  2015-01-19 05:38:56
                               Untergärig vs. Obergärig - top/bottom fermenting naming + history in Czech by barry on  2015-01-19 06:36:34
                                 Untergärig vs. Obergärig - top/bottom fermenting naming + history in Czech by Mosquit on  2015-01-19 06:43:27
                             Untergärig vs. Obergärig - top/bottom fermenting naming + history in Czech by FredW on  2015-01-19 08:03:52
                               Untergärig vs. Obergärig - top/bottom fermenting naming + history in Czech by Nick B. on  2015-01-20 05:09:00
                                 Untergärig vs. Obergärig - top/bottom fermenting naming + history in Czech by Mosquit on  2015-01-20 06:27:18
                                   Untergärig vs. Obergärig - top/bottom fermenting naming + history in Czech by Nick B. on  2015-01-20 07:13:21
                                     Repitching yeast by FredW on  2015-01-20 07:35:41
                                       Repitching yeast by Mosquit on  2015-01-20 09:03:27
                                         Repitching yeast by Nick B. on  2015-01-21 00:52:36
                                           Repitching yeast by Nick B. on  2015-01-21 00:53:26
                                           Repitching yeast + cost calculation by Mosquit on  2015-01-21 02:44:18
                                             Repitching yeast + cost calculation by Mark Andersen on  2015-01-21 07:29:12
                                               Repitching yeast + cost calculation by Mosquit on  2015-01-21 07:53:28