100% Chenin Blanc. Pinon makes two traditional-method sparkling wines, from bunches picked earlier than for the still wines and from the more clay and flint-forward parcels. The vines average 45 years old and have been certified-organic since 2007. For the non-dos--versus the straight brut--the fruit is harvested later and thus riper. The bunches are harvested manually, rigorously sorted and gently and slowly pressed, with the juice flowing by gravity into underground tanks. Fermentation is spontaneous with indigenous yeasts and lasts 4 to 6 weeks. The wine is racked into old tonneaux and steel tanks for 2-3 months of aging on the fine lees. It is then lightly filtered and bottled for its second fermentation; the wine remains on the lees for 4 years before disgorgement. Zero dosage and zero RS.