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'''Kveik''' ([https://soundcloud.com/andreas-misund-berntsen/kveik-pronounciation click here for pronunciation]) is a dialect word for "yeast" in Norwegian ("gjær" is the common word for "yeast" in Norwegian <ref>[http://en.bab.la/dictionary/norwegian-english/gjaer Bab.la Dictionary. Retrieved 01/21/2016.]</ref>), and today specifically refers to yeast that has been reused for generations in traditional Norwegian farmhouse brewing. The term "kveik" does not refer to a style of beer, just the yeast used in traditional Norwegian farmhouse brewing. Kveik yeast are extremely diverse genetically, presenting characteristics that are not typical in other brewing yeasts <ref name="larsblog_analysis">[http://www.garshol.priv.no/blog/349.html "Analysis of farmhouse yeast (kveik)." Larsblog. Lars Marius Garshol. 09/06/2016. Retrieved 09/06/2016.]</ref>. Most farmhouse brewers have started buying their yeast, but some kveik cultures have been passed down from generations and inherited by modern farmhouse brewers in Norway who still use this yeast today and brew with traditional farmhouse methods. Much of the knowledge about kveik and historical farmhouse brewing in Norway has been researched and publicized by Lars Marius Garshol on his blog, ''[http://www.garshol.priv.no/ Larsblog]'', and in the book ''Beer and Brewing Traditions in Norway'' by Odd Nordland (1969). In recent years kveik cultures have been sent to yeast labs for propagation and distribution to brewers around the world <ref name="larsblog_kveik">[http://www.garshol.priv.no/blog/264.html Kveik: Norwegian farmhouse yeast. Larsblog. 11/07/2013. Retrieved 01/14/2016.]</ref>. The use of kveik is one of the many traditional methods still used by a few farmhouse brewers and homebrewers in Norway, along with other historical methods such as infusing the mash or boil with juniper, not filtering, using short fermentations to achieve low carbonation, the use of wood-fired copper or iron kettles, and sometimes not boiling the wort ([[Kveik#Raw_Ale|Raw Ale]]) <ref>[http://www.garshol.priv.no/blog/303.html Maltøl, or Norwegian farmhouse ale. Larsblog. 10/11/2016. Retrieved 01/14/2016.]</ref>.

Thanks to efforts by Lars Marius Garshol and Håken Hveem, and Norwegian farmhouse brewers Svein Rivenes, Sigmund Gjernes, Bjarne Muri, Terje Raftevold, and others, kveik has been made commercially available to brewers around the world. Much of the analysis has been performed by the [http://www.ncyc.co.uk National Collection of Yeast Cultures (NCYC)]. See also the [http://www.garshol.priv.no/download/farmhouse/kveik.html Kveik Registry] being maintained by Lars Marius Garshol.

* [http://poppylandbrewer.blogspot.no/2016/01/making-yeast-ring.html "Making a yeast ring", Poppyland Brewer blog.] See also [http://www.georgehart.com/rp/torzle/torzle.html these instructions].