Lutra Kveik Yeast Overbuild

[DrDance]

Hello HBT Forum!
I have a package of dry Lutra Kveik yeast that I want to turn into more so that I can use it again.
I regularly overbuild starters to harvest yeast for further use, my question is...
If I overbuild a batch of lutra, will it stay contained in the vessel I'm using on my stir plate? I've heard lutra is a rambunctious strain and don't want to wake up to it all over everywhere.
Any help from those who have tried this is appreciated!

 

[lumpher]

What size of vessel are you going to use and what size of starter? 1l starter in a 2l vessel? 2l starter in 5l vessel? 2l in a 2l?

 

[wepeeler]

Pitch a thumbnail for 5 gallons, seal up and repeat. A pinch is plenty for 5 gallons.

 

[DrDance]

What size of vessel are you going to use and what size of starter? 1l starter in a 2l vessel? 2l starter in 5l vessel? 2l in a 2l?

I was thinking to do a 3L in a 4L vessel.

 

[Tony B]

I have made several 1.5L starters with Lutra in a 2.5L flask with no issues. It does push towards the top, but stir plate keeps it in check.
I made one recently from a frozen vial of 6ml of slurry from a previous starter and it turned into more than plenty. I think next time I’ll make a 1L starter from a vial and see how that goes. Probably still more than plenty.

 

[DrDance]

Thanks for all the replies.
I’m thinking to use about half in a 5 gallon seltzer then make a 3L starter with the other half.
Will using only half be enough for both applications?

 

[Tony B]

I’ve heard a lot about under pitching with kveik strains and it working very well. I haven’t tried it, but I started with a single packet of dry Lutra, built a 1.5L, 1.040 starter and pitched 2.5g yeast from the packet. From that I was able to cold crash, decant excess liquid and make 10x 6ml slurry for vials to freeze and about 200ml slurry for my next batch.