Sousão

Sousão is indigenous to the Minho region of northwestern Portugal, growing in an Atlantic-influenced climate defined by cool summers and very wet autumns. The grape was first formally mentioned in the late 18th century by the Portuguese ampelographer Rebello da Fonseca. By around 1790, cuttings had made their way south to the Douro Valley, where winemakers quickly recognized its value for deepening the color of Port wines. This single quality, the red-pigmented flesh that sets it apart from the vast majority of wine grapes, drove its spread across Portugal and eventually to Galicia, Australia, California, and South Africa.

• Indigenous to the Minho region of northwestern Portugal
• First documented by Rebello da Fonseca in the late 18th century
• Introduced to the Douro Valley around 1790 for Port wine production
• Now grown internationally including in Galicia, Australia, California, and South Africa

Sousão belongs to a rare category of grapes known as teinturiers, varieties that carry pigment not just in their skins but in their flesh as well. This characteristic makes it exceptionally valuable as a blending component, capable of intensifying color in ways that ordinary red grapes simply cannot. The grape grows on schist and sandy soils under Atlantic influence, conditions that reinforce its naturally high acidity and keep alcohol levels modest. In Vinho Verde, this translates to light, crisp reds with vivid color. In the Douro, it functions primarily as a color and structure contributor in Port blends.

• Teinturier variety with red-pigmented flesh, not just skins
• Delivers exceptionally high anthocyanin levels and intense color
• High acidity with low to moderate alcohol, especially in Vinho Verde
• Thrives on schist and sandy soils under Atlantic climatic influence

The naming history of Sousão is genuinely complex. Portugal's National Ampelographic Collection lists Sezão as the official name, while Sousão and Souzão are the most widely used synonyms in the wine trade. Vinhão, the name most commonly seen on Vinho Verde labels, was long treated as interchangeable with Sousão, but genetic research has established that Vinhão and Souzão are in fact distinct varieties, albeit closely related ones. In Galicia across the Spanish border, the grape appears as Sousón, where it is grown in the Monterrei DO. This web of overlapping names reflects centuries of cross-border viticulture along the Atlantic coast of the Iberian Peninsula.

• Official Portuguese name is Sezão; Sousão and Souzão are the most common trade synonyms
• Vinhão, the Vinho Verde label name, is now recognized as a genetically distinct but closely related variety
• Known as Sousón in Galicia, Spain, particularly in the Monterrei DO
• Also listed as Souson and Tinta Pais among its alternate names

Within Portugal, Sousão appears across Vinho Verde, the Douro, and the Dão-Lafões regions. In Vinho Verde it tends to produce lighter-bodied reds with striking color and pronounced acidity. In the Douro, it contributes depth of color to Port blends, a role it has filled for more than two centuries. Beyond Iberia, producers in Australia, California, and South Africa have adopted the variety, drawn by the same qualities that made it attractive to Douro winemakers. Notable producers working with the grape include Quinta do Vallado, Quinta da Gaivosa, Quinta do Noval, Graham's, Coto de Gomariz in Galicia, and Yarra Yering in Australia.

• Key regions include Vinho Verde, Douro, and Dão-Lafões in Portugal
• Grown in Monterrei DO in Galicia, Spain
• Cultivated in Australia, California, and South Africa
• Used in both dry table wines and Port wine blends