The red grape variety originates from Italy. Synonyms are Brunetta, Neiret, Neiretta di Pinerolo, Nerét, Nerét Gros, Neretìn, Neretto, Neiretta di Pinerolo, Neret, Neret Ciafi, Neret Gros, Neretin, Neretto de Marengo, Neretto di Piemonte, Neretto di San Giorgio, Neretto Nero and Pcit. It should not be confused with the varieties Neret di Saint-Vincent, Neretto Duro, Neretto Gentile or Neretto Nostrano, despite seemingly suggestive synonyms or morphological similarities. According to DNA analyses carried out in 2004, it comes from a presumably natural cross between Nebbiolo x unknown (extinct) variety. A presumed relationship with Sciaccarello (Mammolo) is doubtful according to the biologist Dr. José Vouillamoz. The variety is named after the municipality of Bairo in the province of Torino in Piedmont. It is permitted there in the DOC wines Canavese and Pinerolese. In 2016, 19 hectares of vines were designated (Kym Anderson).
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