You can taste the mostly limestone soil in this crisp, lively wine. Winemaker: 100% Sauvignon Blanc grapes harvested exclusively from Marnier-Lapostolle’s vineyards which are composed of 75% limestone and 25% flint soil. It is the only wine from the Sancerre appellation allowed to be sold under the exclusive name of “Château de Sancerre®”. Produced in limited quantities, Château de Sancerre affirms the family legacy of the House of Grand Marnier® in the art of winemaking. The Marnier Lapostolle family was originally from the Sancerre region in the Loire Valley, and owns the village’s signature Château. Available locally at Carpinteria Wine Company for $17.99. Lowest price online at Vine Republic for $20.79. See more Picky Picks.