Changes

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.