The white grape variety (also Geisenheim 3-48, Wittberger) is a new breed between Schiava Grossa (Trollinger) x Riesling what was released by in 2012 DNA analysis has been confirmed. Incidentally, the two new varieties are from the same parents Kerner and Rotberger emerged. The cross was made in 1928 by Heinrich Birk (1898-1973) at the research institute Geisenheim in the Rheingau. The vine is susceptible to Botrytis, It produces acidic white wines that are particularly suitable for sparkling wine production. The variety has not prevailed; in 2010 was in Germany no inventory reported.