Torresella Prosecco Rosé DOC is a blend of the aromatic Glera (the main grape of Prosecco) and Pinot Nero grapes. ... The Glera grapes are fermented at cool temperatures (16°C/61°F) to retain the delicate floral and peach aromas, while the Pinot Nero ferments briefly on its skins (6-7 days total) to extract color.