Moderately hardy grape developed from a cross between the Riesling and Trollinger varieties by the Weinsberg/Württemburg State Wine Institute, Baden (De). The latter variety is better known as the Schiava Grossa where grown in the Alto Adige region of Italy. Used to produce a Riesling-like white wine said to often reach "Auslese" Pradikat quality. Regarded by many as having superior characteristics to the Bacchus or Optima grapes. Currently, 1997, recommended for good site locations in southern Michigan and other suitable cool-climate regions where it usually fully ripens in mid-season.

Grape developed from a cross between the Riesling and Schiava Grossa grapes. The latter variety is known as the Trollinger in Germany where it is mostly grown. Used to produce a Riesling-like white wine said to often reach "Auslese" Pradikat quality.

A hybrid grape it produces a Riesling style white wine.