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The most important wine grape variety of Italy's Piedmont region.
Through genetic testing Vouillamoz and Schneider at UC Davis recently found Nebbiolo to be related to other Italian grape varieties; Nebbiolo Rosé, Freisa, Negrera, Rossola, Vespolina and Bubbierasco.
Nebbiolo grapes are used to make wines such as Barolo, and Barbaresco.