province of Treviso around the village of Conegliano and hills of Montello. It is a permitted grape variety in the Denominazione di origine controllata (DOC) zone of Colli di Conegliano where it can make up to 10% of the red wine blend along with Cabernet Franc, Cabernet Sauvignon, Merlot and Marzemino. Outside the DOC, it can be made into a varietal wine under the Indicazione geografica tipica (IGT) designation of Colli Trevigiani where some producers have been experimenting with a blanc de noir sparkling wine made using the traditional method of secondary fermentation in the bottle. According to Master of Wine Jancis Robinson, varietal wines made from Manzoni 2.15 tend to have low tannins with herbaceous aromas (particularly if made from grapes not fully ripe) and notes of both red and black fruits. Manzoni bianco Manzoni bianco or "Incrocio Manzoni 6.0.13", is a white variety which is a cross between the Riesling and Pinot blanc grapes that was created through a series of trials between 1930 and 1935. In 2005, it was suggested that Chardonnay, instead of Pinot blanc, was the second parent of Manzoni bianco, but DNA analysis has shown that Professor Manzoni's original cross is, indeed, Manzoni bianco's parentage. The grape is also known under the further synonyms of "I.M. 6.0.13", "Incrocio Manzoni 6.0.13", "Manzoni 6.0.13", and "Manzoni Bijeli". From its parents, Manzoni bianco inherited an adaptability to various vineyard soils and climate conditions. It also has strong resistance to many viticultural hazards including the apoplexy grape disease esca, powdery mildew and sour rot. Like Riesling it is an early to mid-ripening grape variety. In 2000, there were of Manzoni bianco in Italy, mostly in the Friuli, Trentino, and Veneto regions, but plantings of grape have since spread southwards, so that it can now be found in Calabria, Molise and Apulia. The grape can be used for blending into the white wines of the Colli di Conegliano (at a minimum of 30% of the blend), into Trentino bianco DOCs, and as a varietal in the Vincenza DOC. Producers in the Vigneti delle Dolomiti IGT of northeast Italy have also experimented with various varietal styles, including both spumante and frizzante sparkling wines made from late-harvest grapes. Outside of Italy, Spanish winemakers in the Penedès region of Catalonia have started to plant the variety, making oak-aged varietal examples of the wine. According to Master of Wine Jancis Robinson, Manzoni bianco