The white grape variety (also Freiburg 128-40) is a new variety between Silvaner x Chasselas Blanc(Chasselas) according to DNA analyses published in 2012. The crossbreeding was carried out in 1940 by Dr. Johannes Zimmermann (1907-1998) at the State Viticulture Institute in Freiburg. Plant variety protection was granted in 1971. The medium maturing vine is susceptible to Botrytis. It produces acidic white wines with a neutral taste, which are mainly used for sparkling wine production. In 2010, it occupied 61 hectares of vineyards in Germany, with a downward trend. In Switzerland, it is cultivated on one hectare on Lake Biel.
Pictures: Ursula Brühl, Doris Schneider, Julius Kühn Institute (JKI)