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The white grape variety (also Geisenheim 6414-36) is a new variety between Ehrenfelser x Reichensteiner. The crossing was made in 1964 at the Geisenheim Research Institute (Rheingau) by Dr. Helmut Becker (1927-1990). The name is derived from the fortress Ehrenbreitstein near Koblenz. According to a second version, the name was formed from the beginning of the parent variety, the middle part as a tribute to the fortress and the end of the parent variety. Plant variety protection was granted in 1993. The variety is resistant to both mildew and winter frost. It produces green-yellow, fragrant and acidic white wines similar to Riesling. The variety is mainly cultivated in Rheinhessen. In 2018, only 7 hectares of vineyard area were designated in Germany with a decreasing tendency (D-STATIS).

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