Methode Traditionnelle. Crafted exclusively from fine white Napa grapes, our elegant white of whites sparkles with golden apple and exotic citrus flavors, underscored by a lovely, biscuity toastiness. Blanc de Blancs is an inspired choice for a spontaneous afternoon picnic or a stylish sushi spread. mummnapa.com. Alc 12.5% by vol. Bottled by Mumm Napa, Healdsburg, California.