On the left bank of the Loire, south of Bourges, the Sancerre hill overlooks a landscape of vineyards, woods, and white villages that seems unchanged for centuries. It is here that Sauvignon Blanc has found one of its highest and most studied expressions in the world: not the aromatic and immediate grape that is drunk young, but something more serious, capable of aging, surprising, and telling the difference between one rock and another.

Because in Sancerre, geology is everything. The vineyards rest on three main formations: calcaires à belemnites (the famous terres blanches), silty-clay soils called caillottes, and the crystalline rocks of silex and orthogneiss. Each imparts a different signature to the wine, recognizable by those who know how to listen. The white soils provide structure and longevity, the silex that smoky and almost wild minerality, the caillottes the most immediate and floral freshness.

Sancerre is not a uniform appellation: it is a mosaic of soils that Sauvignon Blanc interprets differently each time, from the smoky and almost briny silex to the more structured and long-lived terres blanches. Wines to open in advance, to let breathe, not to judge on the first sip.