Sousão

The Story

Sousão produces the darkest, most deeply colored wine of any Port grape—ink-black juice that stains everything it touches. It's the color bomb in field blends, adding visual drama and tannic backbone.

Insider Story

If you've seen truly black Port—the kind that seems to absorb light—Sousão is probably responsible. No grape produces deeper color or more aggressive tannins.

In Douro, Sousão is a blending component—5-15% adds color and structure without dominating. Traditional field blends diluted its power among 15+ other varieties.

In Vinho Verde (as Vinhão), Sousão makes Portugal's only serious red from the northwest. These wines are tart, tannic, deeply colored—challenging but distinctive.

The grape's tannins are fierce. Young Sousão is almost undrinkable; 10-20 years of aging reveals complexity beneath the structure. Patient collectors are rewarded.

Some producers now make single-variety Sousão—table wine or Port. These are not wines for the faint-hearted: ink-black, massively tannic, built for decades.

In California, Souzão (the American spelling) appears in small quantities—robust, colorful, usually blended.

Technical Deep Dive

Sousão produces the darkest wines in Portugal—color intensity 15-20+ (measured optically), compared to 10-12 for typical Port varieties. Tannins are massive (4,000-5,000 mg/L); acidity is high (6-7 g/L).

Flavor profile: blackberry, blueberry, ink, pepper, bitter chocolate, tar. The grape's bitterness is distinctive—chalky, mouth-coating.

Sousão ripens late (late October) and needs warm sites for maturity. Even ripe, it retains aggressive tannins and acidity.

Winemaking requires careful extraction—too much and the wine is unbalanced. Blending with softer varieties (Touriga Nacional, Touriga Franca) creates harmony. Extended aging (barrel and bottle) tames the tannins.

As Vinhão in Vinho Verde, different winemaking applies: brief maceration, early bottling, high acidity, slight effervescence.

Industry Secrets

Sousão is the 'secret weapon' of Port blends—responsible for the deepest colors without being named on labels.

Old Sousão (30+ years) is revelatory—the tannins resolve, revealing complexity. Young Sousão is investment; old Sousão is reward.

Vinhão (Vinho Verde) is a completely different experience—tart, light, red-purple. Think of it as Portugal's natural wine for summer.

Some American producers use Souzão for color in field blends—Ridge Vineyards and a few others preserve traditional mixed plantings.

More red grapes

• Sousón
• St. Laurent
• Stanušina
• Sumoll
• Syrah