The red grape variety comes from Italy, Synonyms are Corbera, Crova, Crova di Bobbio, Crova di Voghera and Crova Nera. Because of the similarities in names and apparently suggestive synonyms, it was often used with the two varieties Corvina Veronese and Lambrusca di Alessandria (Synonym Corva) confused. However, it is in accordance DNA profile independently. The old variety used to be in the province of Brescia in the Lombardy widespread. Today it is practically extinct. In the middle of the city of Brescia, the Pusterla winery cultivates the “Vigneto Pusterla” vineyard at the foot of the castle, in which there are sometimes very rare indigenous varieties on four hectares and from which the special cuvée IGT “Ronchi di Brescia” is made. Among them are Groppello Gentile. Invernenga. Maiolina. Marzemino. Schiava Grossa and also Corva. From the club Slow food this vineyard was defined as a cultural heritage in 2007. No stocks were shown in 2010 (Kym Anderson ).
Source: Wine Grapes / J. Robinson, J. Harding, J. Vouillamoz / Penguin Books Ltd. 2012