the vineyards of domaine laroche are spread across chablis, and are currently undergoing conversion to organic viticulture. grégory viennois, a graduate of the university of burgundy, is the winemaker. chablis aoc wines are produced exclusively from the chardonnay grape. domaine laroche decided to bottle its offering under screw caps to keep wines fresh and prevent cork taint, but later switched back to using corks.