In 2010, DNA analysis suggested that Uva Tosca may be a natural crossing between the Alto-Adige wine grape Schiava Grossa and Crepallocchi.
Tanara noted that the grape made pale-colored "reddish wine" that was very healthy to consume and somewhat sweet and spicy.
[1] Uva Tosca is a mid to late-ripening grape vine that is very susceptible to the viticultural hazards of powdery mildew and millerandage.
[1] In 2000, there were 115 hectares (280 acres) of Uva Tosca planted in Italy, the vast majority of it in the provinces of Modena, Ravenna and Reggio Emilia.
[1] While permitted in several Denominazione di Origine Controllata (DOC) and Indicazione geografica tipica (IGT), the grape is rarely seen as a varietal and is mostly used a minor blending component.