Preuve (French for evidence) has taken years to craft. This wine is 'proof' that we can produce exceptional sparkling wines in the Sta. Rita Hills. Made of equal parts Chardonnay and Pinot Noir, from three of the top vineyards in the appellation (Sanford & Benedict, Rinconada, and Bentrock), the inspiration for this wine came from Raj's visit to the cellar of Anselme Selosse. ⁠

One of the greatest winemakers in Champagne, it was in Anselme's cellar that Raj and his friend Michael Cruse tasted the magic of the solera system, the blending of successive vintages to produce a wine that combines the complexity, vibrancy, richness, and charm of both young and mature champagne.⁠ ⁠This multi-vintage wine was bottled without any dosage (zero addition of sugar before corking), with less atmospheric pressure (a gentler secondary fermentation to produce less bubbles, and therefore a more vinous mousse) and disgorged after 4⁠ years on the lees.⁠