“Lager yeast at body temperature” it’s very hard to believe it. But hope dying last so I had to try it. I don’t have any experience with kveik yeast, the information on producer website is terse and I can’t find any opinion on homebrew forum. I wasn’t sure should I keep it on lower temperature or middle for this strain. So this brew is more experimental than casual brewing and unless I get perfect lager I can’t give any objective opinion like say that this yeast doesn’t work for lagers. I used my competition winning recipe grain base (Pilsner malt + Carapils) for this beer and as I didn’t know what profile I can expect I didn’t worry too much for hopping and I used Czech hops Saaz and Sladek. So let’s see how it works…
Batch size: 25L (6.5 gal)
Mash water: 19L RO filtered water + 3g Gypsum + 4g Calcium Chloride
Sparge water: 16.5L RO filtered water
Pre-boil gravity: 1.043 (10.7 BLG)
Boil time: 90 min
OG: 1.050 (12.4 BLG)
FG: 1.010 (2.5 BLG)
IBU*=31 EBC*=5.5 SRM=2.8 ABV=5.3%
BH Efficienty*=82% Est Mash Eff*=88.6%
* – EST by Beer Smith3
|4.8 kg||Pilsen Malt (Best Maltz)||94.1%|
|0.10 kg||Acidulated Malt||2%|
WHC Lab – UBBE Kveik
|66°C (151°F)||Mash Step||60 min|
|72°C (161°F)||Mash Step||15 min|
|76°C (168°F)||Mash Out||15 min|
BREW DAY– 30.07.2019
Fermentation started from 26°C and go up to 34°C at the end of primary fermentation.
07.09.2019 Racking to secondary
Beer has been bottled with addition 148g glucose. I got 41 bottles.
I have a problem with this beer. When I was racking to secondary fermentation, beer seems to be perfectly clean and clear with a nice hop aroma. I had to leave it for almost 3 weeks due to my holidays. When I was bottling, I found some esters like a red apple aroma (not acetaldehyde) and I suspect ethyl hexanoate in high concentration. Now this aroma disappeared, but it looks like all aroma disappeared too. I can not find aroma hops or anything else except some esters, not similar to ale yeast character, which I can not identify. No tone of sulfur, like in german lagers or a bit of diacetyl like in bohemian pilsners. I cannot say what is wrong but something is. Beer is not bad. But I fell that something missing. It does not smell like oxidized beer but a long time on secondary fermentation could be a reason. I will definitely try again this yeast with different hops composition and without secondary fermentation.