Designation (also pure varietal) for a wine that has been pressed 100% from a single grape variety. If other grape varieties are also involved (even if only slightly), strictly speaking one cannot speak of "varietally pure", although in the case of a clearly dominant grape variety, the term varietally pure is also used colloquially. However, the term is not regulated by wine law. Within the EU, however, there is a wine law regulation for the naming of grape varieties on the label. If a single grape variety is indicated there, its share must be at least 85% (in the USA or Australia, for example, only 75%). The remaining 15% can be supplemented by other varieties, but do not appear on the label.
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Technischer Lehrer, staatl. geprüfter Sommelier, Hotelfachschule Heidelberg