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The red grape variety comes from Italy. Synonyms are Crovaja, Cruaia, Cruaio, Cruara, Cruvaio, Gruaia, Gruaio and Gruajo. It was already mentioned in the 18th century. Although it appears to have synonyms or morphological similarities, it should not be confused with the varieties Raboso Piave or Raboso Veronese (Cruaia, Cruaio). DNA analyses carried out in 2008 revealed a close relationship with the variety Negrara Veronese. The medium to late ripening vine needs a warm climate. It produces slightly bitter tasting red wines with forest berry and maraschino cherry aromas. The almost extinct variety was revived in 1992 by the initiative of the Institute in Conegliano and replanted in the province of Vicenza in Veneto. In 2016, however, no stocks have yet been identified (Kym Anderson).

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