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The term "landrace" should not be equated to "kveik". Kveik has been suggested to be a subtype of landrace yeast, but "kveik" is a term used specifically for Norwegian farmhouse brewing yeast and mixed cultures. More information on Norwegian kveik can be found on the [[Kveik|Kveik]] page.
==CulturesCommercial Availability=={| class="wikitable sortable"|-! Kveik || [http://www.garshol.priv.no/download/farmhouse/kveik.html Registry Num] !! Yeast Lab !! Package !! Notes|-| Muri || [http://www.garshol.priv.no/download/farmhouse/kveik.html#kv4 4] || [[Mainiacal Yeast]] || Dried Kveik - Muri || The full, unpurified (no microbes isolated or removed) culture. Limited availability.|-| Muri || [http://www.garshol.priv.no/download/farmhouse/kveik.html#kv4 4] || [[White Labs]] || WLP6788 Norwegian Farmhouse Ale || A single strain from a farm called Muri in Olden, Sogn og Fjordane, Norway (6788 is the zip code). It was used in traditional farmhouse brewing up until 1990, then left in dried form in a building on the farm. The son on the farm revived it with difficulty last year and has been using it in modern home brewing since <ref name="larsnor">[https://www.facebook.com/groups/MilkTheFunk/permalink/1075155775845969/?comment_id=1075310892497124&offset=0&total_comments=33&comment_tracking=%7B%22tn%22%3A%22R9%22%7D Conversation with Lars Garshol. 6/4/2015.]</ref>. Purchase from [http://www.bryggselv.no/ Bryggselv.no]. US customers 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>. |-| Jovaru || [http://www.garshol.priv.no/download/farmhouse/kveik.html#kv32 32] || [[Omega Yeast Labs]] || Jovaru™ || This strain tests positive for the STA1 gene, an indicator of ''Saccharomyces cerevisiae'' var. ''diastaticus''. This strain may have the ability to metabolize dextrins over time, resulting in higher than expected attenuation. JOVARU™ is an ALDONA UDRIENĖ™ yeast strain that originates from the famous JOVARU™ Brewery that has been in operation since the mid-19th century <ref>[https://omegayeast.com/yeast/lithuanian-ales/jovaru-lithuanian-farmhouse Jovaru Lithuanian Farmhouse Yeast. Omeaga Yeast Labs website. Retrieved 05/16/2019.]</ref>.|} ==Specific Culture Information==
Until the introduction of Emil Chr. Hansen's pure-yeast system in 1883, all yeast was treated in effectively the same way as kveik. However, pure lab yeast generally replaced the ancient cultures all over the world. In farmhouse brewing, the old practices continued until quite recently in several Nordic and Baltic countries. Farmhouse brewing still continues in Denmark, Finland, Sweden, Estonia, Latvia, and Lithuania. As far as is known, Lithuania is the only country other than Norway in which the old yeast cultures are still alive, and used in the same way as they were in the past. See [http://www.garshol.priv.no/download/lithuanian-beer-guide/ Lithuanian beer - a rough guide] for more information. Genetically speaking, these yeast cultures are generally not in the same family as kveik, and thus are not referred to as "kveik". The alternative nomenclature of "Landrace yeast" has been suggested by Richard Preiss.
** As noted above, 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" />.
* The [https://www.brewingscience.com/product/norwegian-farmhouse "Norwegian Farmhouse Ale" strain from Brewing Science Institute] is likely Muri, but this has not been verified <ref>[https://www.facebook.com/groups/MilkTheFunk/permalink/2491619220866277/ Allen Stone. Milk The Funk Facebook group thread on BSI Norwegian Farmhouse Ale strain. 02/01/2019.]</ref>.
==See Also==