The vineyards between Monnières and Saint-Fiacre feature a high proportion of gneiss mixed with sand, clay and gabbro, and being towards the western edge of Muscadet, these sites are generally harvested later than in the rest of Muscadet. Gneiss typically makes wines with less tart and punchy acidity that one normally finds in Muscadets grown on granite or schist. With 36 months of aging on the lees, Michel Delhommeau’s Monnières St-Fiacre roundness is tempered by a leesy and mineral intensity.