A lesser known area of the Loire Valley making Chenin Blanc in a similar style as Vouvray and planted on the same tuffeau soils. The wines are crafted dry to sweet and have an earthier, more mineral quality compared to Vouvray. Montlouis-sur-Loire Pétillant need only be aged for 9 months, while Montlouis-sur-Loire Mousseux has no aging requirement.