Pinot blanc is a white wine grape. It is a point genetic mutation of Pinot noir. Pinot noir is genetically unstable and will occasionally experience a point mutation in which a vine bears all black fruit except for one cane which produces white fruit.
Pinot blanc’s name varies by region. Weissburgunder is also used in the Südtirol/Alto Adige region of north east Italy (also occasionally named so in Alsace) and in Germany.