The grape was grown in 1968 by Johannes Zimmermann of the wine-growing institute in Freiburg as fungus-resistant. It is the result of crossings between Riesling, Seyve-villard, Ruländer, and Gutedel. The grape is named after the grower. Outward similarity with her mother-grape the Riesling are unmistakable. Both the grape, bunch and the leaf. The best harvest time depends on the climate. In The Netherlands, this is early to mid October.
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