Voss Kveik Ale Yeast – The LalBrew® Voss strain was obtained from Sigmund Gjernes (Voss, Norway), who has maintained this culture using traditional methods since the 1980s and generously shared it with the wider brewing community. LalBrew® Voss Kveik Ale Yeast supports a wide range of fermentation temperatures between 25-40°C with a very high optimal range of 35-40°C.