The white grape variety (also Würzburg B 51-4-10) is a new breeding between Rieslaner x Müller-Thurgau, which was confirmed by DNA analyses published in 2012. The cross was made in 1951 by Dr. Hans Breider (1908-2000) at the Bavarian State Institute for Viticulture and Horticulture in Würzburg. Incidentally, the two new breeds Albalonga and Montagna were created with the same parents. The plant variety protection was granted in 1979. The name means "fresh source" and refers to the fresh, racy taste of the riesling like white wines. In 2009 the variety was cultivated on one hectare in Franconia.
Pictures: Ursula Brühl, Doris Schneider, Julius Kühn Institute (JKI)