The white grape variety is a new breed between Riesling x Pinot Blanc. Synonyms are I.M. 6.0.13, Incrocio Manzoni 6.0.13, Manzoni 6.0.13 and Manzoni Bijeli. The cross was made by the breeder Luigi Manzoni (1888-1968) at the beginning of the 1930s at the Conegliano Wine Institute in Veneto(Italy). It was by far his most successful creation. The early to medium ripening vine is resistant to powdery mildew and Esca. It produces aromatic white wines with aromas of jasmine, lemon herb and honey.
The variety is grown mainly in Veneto, where it is authorised in the DOC/DOCG wines Bianco di Custoza, Colli di Conegliano, Colli Euganei and Vicenza. There are also stocks in Apulia, Friuli Venezia Giulia, Calabria, Molise and Trentino Alto Adige. In 2000, the area under cultivation in Italy was 8,290 hectares. However, by 2010, the stock has decreased to 382 hectares - the reason for this extreme reduction is not known (Kym Anderson) . Small areas are also to be found in the Spanish Penedès area.