A white wine grape that originated in Burgundy, Melon de Bourgogne has, sadly, essentially vanished from that region. But fans of the varietal need not despair; its virtual disappearance from this pricy zip code has not prevented it from thriving in the Loire Valley, where it is made into the affordable, zippy, mineral, citrusy wines of Muscadet that pair so well with oysters. The best of those wines come from the region Muscadet de Sèvre et Maine. It is sometimes simply referred to as Muscadet.