The red grape comes from the border area Italy / Switzerland, Synonyms are Barau, Durás, Fiori, Neirét dal Picul Rus, Nerdala, Nerdela, Provinè, Pruinè, Uva di Biella, Verdés and Vernassa. Despite apparently suggesting synonyms or morphological No similarities to the variety Neret di Saint-Vincent be confused. For a long time, an origin from aosta Valley suspected because it was first mentioned there in 1838. But maybe it comes from the Piedmont, because the two varieties Uva, Biella and Vernassa grown there are identical. According to in 2011 DNA analysis there is a close relationship with the Piedmontese variety avarengo, The variety becomes a grape variety group in Switzerland Old plants counted.
The late-ripening vine produces neutral red wines. It is cultivated in the east of the Aosta Valley in some municipalities, as well as in Piedmont. In 2000 it was threatened with extinction with only 8 hectares, but 30 hectares were recorded again in 2010 (Kym Anderson ). There are also said to be very small quantities in Switzerland.
Source: Wine Grapes / J. Robinson, J. Harding, J. Vouillamoz / Penguin Books Ltd. 2012
Images: MIPAAF - National Vine Certification Service