The Ruchè grape variety has very ancient origins, almost certainly indigenous to the Monferrato Astigiano. Some believe it came from Spain, while others think its precursors originated in France, brought to the area by monks who planted it around the monastery of San Rocco (no longer existing) in Portacomaro. The name Ruchè has an uncertain etymology. Some link it to the Confraternity of the Friars of San Rocco, others to the grape’s preference for the sunniest, steepest rocky areas. Another theory suggests the name derives from “roncet,” a viral degenerative disease, as the Ruchè grape showed greater resistance to this virus compared to other varieties grown in the area (Piedmont). Its primary cultivation area is restricted to the municipality of Castagnole Monferrato and, more marginally, to other parts of the Asti region. It has also spread sporadically to Alessandria, where it is often called Moscatellina.

The rediscovery of Ruchè, a long-forgotten grape variety, dates back to 1964 when Don Cauda, a priest in Castagnole Monferrato, found this grape variety in the small parish vineyard. Intrigued, he decided to vinify it. Don Cauda is credited with the oenological rediscovery of Ruchè. Thanks to him, other vinegrowers began planting and vinifying it, turning it into a crucial resource for the Castagnole Monferrato area, as evidenced by its DOC status in 1987 and DOCG status in 2010. The production area of Ruchè di Castagnole Monferrato is extremely limited, confined to the municipalities of Castagnole Monferrato, Grana, Montemagno, Portacomaro, Refrancore, Scurzolengo, and Viarigi, with around 20 producers operating in this region.

The Ruchè grape has fairly large but loosely packed clusters, medium-sized berries, and thick skins. It prefers hilly soils that are loose and not too rich. Wines made from pure Ruchè are characterized by a pronounced aroma of roses and spices. Their acidity is generally low, but they feature strong tannins that often leave a bitter note on the palate.