Bosco is a white grape variety with deep roots in eastern Liguria and the winemaking tradition of the Cinque Terre, where it became firmly established during the 20th century, helping to rebuild the vineyards following the phylloxera epidemic. Today it is grown mainly in the terraced areas of the province of La Spezia, particularly between Monterosso, Vernazza, Riomaggiore and the hills of Levanto, on steep, breezy slopes close to the sea. The leaf is medium-sized, pentagonal and five-lobed, with a smooth surface, light green veins and a petiole sinus that is generally open in a V-shape. The bunch, medium or medium-large in size, is long, cylindrical or conical, often with distinct wings and ranging from loose to medium in compactness. The berry is medium to large, spherical or tending towards ellipsoidal, with a yellowish-green skin that turns to amber and juicy flesh with a herbaceous character. In dry wines, Bosco offers hues ranging from straw yellow to pale gold, with aromas of wild herbs, delicate flowers and camomile, and a smooth, savoury flavour with good body. In dried grape versions, particularly in Sciacchetrà, it displays greater intensity, richness and ageing potential, developing honeyed, fruity and amber-coloured nuances. Its thick skin also promotes the drying of the grapes, making it particularly valuable in the production of sweet, long-lived wines.