My experience with Skare Kveik.
Keik obtained from an individual from Denmark named "Rune" which I met on Facebook group "kveik - kjøp/salg". I paid about €20 for 1.5g.
Skare is known to ferment clean beers almost lager-like at 31C in a relatively short period of time. It is summer and in-doors temperature is constant 28C.
For this reason I was inspired by the Czech pilsner, and brewed 20L (4 gal) of this recipe:
3.4kg Pilsner Malt, 0.5kg Munich Malt, 0.2kg Cara 120, 0.2kg CaraPils (for head retention)
Mash: 30min
@65C, 40min @67C, 10min @70C (direct heating applied)
Hop: 60min 15g Aramis (6.5% AA), 30min 20g Aramis, 5min 20g Aramis
2tsp yeast nutrient; Soft water used (60% RO, 40% hard, local tap water), No chill method: basically transfer wort to jerrican and wait for it to cool down for about 15 hr.
OG: 11 Brix (refractometer)
Pitch 1.5g dried yeast slurry
lag time: 12 hrs (to start bubbling)
Ambient fermentation temperature: 28C
I found that fermentation bucket needed daily shaking for 4 days because bubbling in fermentation would slow down to almost none.
Left beer in fermentation bucket for a total of 10 days (as I said, I stopped shaking after 4 days)
day 11: Emptied to keg. Force carbonate at 50psi while rocking keg for 15 min. Chilled down to ~4C and allowed to rest for 3 days. Smells unpleasant.
day 14: Smells yeasty. Tastes bitter. Perhaps too much bittering. Not convinced by the Aramis hop, too "green". It is my first time brewing with Aramis and fermenting with Kveik. Decided to add 5g sea salt to soften sharpness of that bitterness. Tested pH: 5.5, good.
day 18: Yeast character dropped significantly. Hop aroma mellowing. Now it tastes lager-like. Salt has worked: less bitterness. Slight perception of salty. Overall it turned out great.
day 20: beer still improving and coming together. Quite pleased with results. Aramis hop is similar to noble German hops, spicy, earthy. Yeast character is very mild now. Beer still hazy.
Overall it was a good experience. I would have preferred if the beer wasn't so hazy. It is not clearing that quickly even after 10 days at 4C.
I harvested the slurry and dried it up (in open air). I have collected 6 portions of 3.5g each. I have also kept liquid slurry from bottom of bucket.
Next project: try a similar recipe with Saaz (more Czech) and ferment it with the dried yeast slurry to see if they got contaminated (which they must have to some extent) and to see if that contamination will affect the next batch. I read that it does not affect much because the Kveik yeast takes over bacteria and other wild-yeast very aggressively, subduing them.