At the Sanger Cellars, free tours of the high school’s (Lycée Viticole de la Champagne) impressive production facilities take in traditional equipment and the latest high-tech machinery, such as a Rube Goldberg gadget that removes sediment from the necks of bottles after remuage (riddling) by an automated gyropalette . Champagnes are sold at the discounted prix départ cave (cellar-door prices; profits are reinvested in the school. The entrance is on the D19; if the door is locked, push the intercom button.
