It was great fun pouring these wines at our recent Loire Valley jamboree. This was the first time many in our audience had the chance to taste one or two of the top single-vineyard wines from one of the superstar growers on one of the greatest terroirs of northern France—Chavignol. It’s safe to say many were left astonished by the quality and style of the wines they tasted, which is about as far as you can get from typical modern-day Sancerre without ending up in Chablis. It’s also safe to say that many were equally fascinated by the centuries-long past of this producer and its revered vineyards. It’s not every day you get to taste a wine from a vineyard that first appeared in documents dating to 1328, as with Boulay’s Le Clos de Beaujeu.A bit of history helps us understand what makes people consider Chavignol’s wines the highest expression of Sancerre and sui generis Sauvignon Blanc. Despite its proximity to the town, this small village (about one-third of the size of the Chablis Grand Cru) has a proud identity. For centuries before the advent of the Sancerre appellation, the Boulay family and their peers had long bottled their wines under the name Chavignol. In 1956, Pierre Bréjoux—a high-ranking official at the Institut National des Appellations d’Origine—noted in his Les Vins de Loire that the name of Chavignol on the grower’s label seemed to take on greater importance than the name of Sancerre. Indeed, the Boulay’s famed Comtesse vineyard on Monts-Damnés was only grafted after 1945, making it France’s last ungrafted white-grape vineyard, as La Romanée-Conti was for red grapes. Many years later, when Didier Dagueneau finally acquired a slice of Chavignol after years of waiting, he wanted to call his wine simply ‘Chavignol’ to differentiate it from the rest of Sancerre. This place commands such renown inside and outside the village because the steep Kimmeridgian terroir transcends the variety grown here: the wines are more fleshy, opulent and less varietal. In the hands of the best growers, a Chavignol is a wine with a rippling Chablis-like texture—perhaps unsurprising as they share the same soils—and characteristics of stone fruit and ripe citrus shot through with fresh-cut herbs and steely minerality. They are wines with enormous, seductive, earthy appeal, even for those not typically fans of the grape. They are Chavignol first, Sancerre second and Sauvignon third.