The white grape variety (breeding no. Geisenheim 6414-36) is a new cross between Ehrenfelser x Reichensteiner. The cross was made in 1964 at the Geisenheim Research Institute (Rheingau) by Dr Helmut Becker (1927-1990). The name is derived from the Ehrenbreitstein fortress near Koblenz. Plant variety protection was granted in 1993.

The medium-maturing variety is resistant to powdery mildew and downy mildew (moderate) and frost (above average). It produces greenish-yellow, fragrant and acidic white wines similar to Riesling.
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Roman Horvath MW
Domäne Wachau (Wachau)