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* [https://catalogue.ncyc.co.uk/saccharomyces-cerevisiae-4045 NCYC 4045 - Two related strains of ''Saccharomyces'' kveik.]
** Also packaged by [https://www.whitelabs.com/ White Labs] as WLP6788 and available from [http://www.bryggselv.no/ Bryggselv.no]. US customers can send an email to "post @ bryggselv.no". See [http://www.garshol.priv.no/blog/329.html source information on Lars Garshol's blog] for brewing notes. Species currently unknown, but most closely related to bayanus / pastorianus / uvarum / arboricolus <ref>[https://www.facebook.com/download/950176781672127/1845813_funits.pdf Accugenix Report from White Labs on WLP 6788. Posted by Eskild Alexander Bergan on Milk The Funk. 6/4/2015.]</ref>.
** Whole-genome sequencing by Kristoffer Krogerus suggests that this is a hybrid between ''S. cerevisiae'' and ''S. uvarum'' with introgressions from ''S. eubayanus''; it is also POF+ (all other kveik strains tested by Richard Preiss have been POF- <ref>[https://www.facebook.com/groups/MilkTheFunk/permalink/1336954522999425/?comment_id=1510478635647012&reply_comment_id=1510501832311359&comment_tracking=%7B%22tn%22%3A%22R9%22%7D MTF conversation with Richard Preiss of Escarpment Labs regarding POF of kveik strains. 12/14/2016.]</ref>). Additionally, this strain is genetically not related to the other kveik strains, and thus arguably is not actually classified as "kveik" <ref name="garshol_not_kveik"/><ref name="preiss_diagram"/>.
<blockquote>
"This is an unusual hybrid to see in brewing environments, but has been found in wine fermentations. Hopefully, we'll be able to figure out some hints on what the origin of this strain is (e.g. is it a wine hybrid that has been adapted to brewing conditions, or could it be a natural hybrid between a brewing strain and a wild S. uvarum strain?). The high attenuations seem to suggest it does not have a wine background. Lager yeast is also a hybrid, but between S. cerevisiae x S. eubayanus. S. uvarum, like S. eubayanus, is relatively cold-tolerant, so it is possible that Muri does well in low temperatures as well. Unlike lager yeasts, this strain has functional PAD1 and FDC1 genes making it POF+ (as has been mentioned previously). What is also interesting is the contributions from S. eubayanus; what genes (and are they significant somehow) and where did they come from (from a lager strain or a wild S. eubayanus strain)? Many questions, but hopefully we can answer some of them!" ~ Kristoffer Krogerus <ref>[https://www.facebook.com/groups/MilkTheFunk/permalink/1336954522999425/?comment_id=1510478635647012&comment_tracking=%7B%22tn%22%3A%22R%22%7D Conversation with Richard Preiss on MTF regarding Muri DNA analysis. 12/14/2016.]</ref>