Jean Maupertuis tends 3,8 hectares of vines in the commune of Saint-Georges-sur-Allier and La Roche Noir. He works principally with a local strain of Gamay referred to as "Gamay D'Auvergne", but also owns a little bit of Pinot Noir and a tiny amount of Noirfleurien, an ancient local varietal found only in his neighboring village of Mirefleurs. Most of his vines are older, ranging from 40 to 100+ years.
Neyrou is local dialect for Pinot Noir. These grapes are trained En Lyre. The is very low yielding (10hl/ha), giving it exceptional concentration for Pinot.
The wine undergoes cold semi-carbonic maceration with half of the grapes de-stemmed. Fermentation starts in tank and then the wine is moved to old barrels.
Unfined and unfiltered, with no added SO2.