Fermentis Safale K-97 is a German ale yeast selected for its ability to form a large firm head when fermenting. Suitable to brew ales with low esters and can be used for Belgian type wheat beers. Its lower attenuation profile makes for beers with a good mouthfeel. This ale yeast works at a wide temperature range between 12-25Â°C (53.6-77Â°F) but ideally between 15-20Â°C (59-68Â°F). Highly flocculant.