The red grape variety originates from Switzerland. Synonyms are Clevner Mariafeld, Mariafeld and Mariafeldtraube. However, it is not an independent grape variety, but a clonal mutant of Pinot Noir. Although the DNA profile is identical, there are small morphological differences. Due to a physiological change in the grape structure, the grapes are looser-grained, which results in a lower susceptibility to fungi or grape rot. The variety was discovered in the municipality of Stäfa on Lake Zurich, where it is also cultivated under this name. The clone is also used in Germany, however, under the name Pinot Noir. It belongs to the group of Pinot varieties; see there. In 2016, however, no stocks were reported under this name (Kym Anderson statistics).
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Technischer Lehrer, staatl. geprüfter Sommelier, Hotelfachschule Heidelberg