100% La Crescent. Vermont. 

From the winemaker: "The Great Spangled Fritillary, the Speyeria Cybele, is an orange butterfly that makes its home in the section of our vineyard meadow devoted to white grapes. Our sparkling white is made from La Crescent, a descendent of Muscat de Hambourg, and grown in the hills and valleys of Vermont. Hand-picked and hand-sorted, this honest, unfiltered wine was fermented on native yeasts, with long maceration on its skins at our cantina with a traditional second fermentation in bottle."