RE-using Kveik

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the baron

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Hi I use Kveik virtually for most brews unless specialised beers and I am more than happy with the results.
I have though found a anomaly that when you pitch with slurry on the 3rd Generation it seems to take longer to ferment out even though it goes off like a train it takes probably 7 days to ferment out.
I pitch at 40c and let it freefall to room ambient but wrap the FV to keep the temp up for as long as possible and never have a problem but after the 2nd re-pitch the yeast starts to take longer, anybody had the same or any ideas why but I am still happy with the results
 
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Just thinking out loud. Obviously these commercial strains have been isolated and propagated in labs, but Kveik has developed with being dried after use for repitching later. I wonder if issues with slurry after x generations is an issue others face? I may ask Lars for his thoughts on this.
 

the baron

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Yes it maybe that the slurry way is not the best way to re-pitch it any suggestions welcome
 

RoomWithABrew

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I dried some of the kveik slurry on greaseproof paper from my first batch and then have kept the flakes in the freezer.
Each time I need to pitch I just take about 5cm x 5cm of flakes and throw them on the wort.
I'm pitching first generation this way each time.
 

the baron

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I dried some of the kveik slurry on greaseproof paper from my first batch and then have kept the flakes in the freezer.
Each time I need to pitch I just take about 5cm x 5cm of flakes and throw them on the wort.
I'm pitching first generation this way each time.
Hi RWAB how do you dry the Kveik on the greasproof paper?
 

the baron

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Thanks gents I think it is maybe to do with over pitching the slurry maybe so I am going to try and dry some and try both a teaspoon or 2 of slurry and dry some so it will take me a t least a couple of brews to fathom out which is best
 
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I had some similar issues with over pitching because I collected the slurry in 50mil vials and then used that amount each time.

Now I use a tablespoon of slurry for each 23L brew and that seems to be the right amount.

Also, top cropping for me is pain when using my All Rounder FV.
 

the baron

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My first experiment will be to use the slurry off of one of the "problem" brews but just use 1 Tablespoon and see if it ferments in normal time athumb..
 
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It will be interesting to see how you get on. I’m still under pitching on Gen 1 after countless brews!

In fact, when I bought my first dried versions of Voss and Lutra, I only pitched half a packet (which worked out great) and yet the Brewfather calculation said I needed to use 2 packets.
 

the baron

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Thats another thing I am going to do when I finally get around to pitching a new packet only use half or maybe a third?.
It will take a few months for me to brew enough to get a indication of which way to do things but I will report the results eventually
 

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@the baron
I basically followed this advice,


but just poured the slurry from the fermentasaurs collection bottle onto the greaseproof paper whilst on oven racks. Spread it out thin with a sanitised spatula and then in the oven on fan with the door open slightly. Took a few hours to dry.
When it was bone dry put the flakes in a tupperware in the freezer.
 
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Thought I might as well add to this thread rather than start another.
I have washed the trub from my last Kveik brew and got 2 jars with about 3mm of yeast in the bottom. They are 100g coffee jars 6cm x 6cm.
I guess it's about the same amount as a sachet of it's parent (CML Voss) in each.
Should I just pitch one jars worth into my next brew?
IMG_20220204_104220.jpg
 

RoomWithABrew

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I believe about a teaspoon of the slurry at the bottom of your picture is good for 23 litres or so.
I repitch the dried yeast but think I remember the teaspoon info from somewhere.
My dried flakes of opshaug pitched sunday was 98 % percent done by weds pm and has only dropped 2 points since then. Seemed to go fine, crashing the brown ale tomorrow am.

That said I'd only pitch half a packet of Voss anyway.
 
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Well I used that pot of washed Kveik at about 5pm and at 8am it was going like a rocket.
I managed to top harvest about 50% of the foaming krausen.
An hour later it had replenished itself again so I took a bit more.
Then an hour later it had sunk and gone.
Pleased to catch it this time but it's such a short window of opportunity.
 

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