Hondarrabi Zuri Zerratia

The Story

Hondarrabi Zuri Zerratia is Petit Courbu wearing a Basque beret. The name translates roughly to "serrated-leaf Hondarrabi Zuri" in Euskara — the Basque language — and the "zerratia" (serrated) suffix distinguishes it from its more famous cousin Hondarrabi Zuri (Courbu Blanc). Both grapes grow in the sea-sprayed vineyards of Getariako Txakolina, the small fishing-village appellation strung along the Bay of Biscay between Getaria and Zarautz in Gipuzkoa.

This is unambiguously a white grape — despite being listed as "red" in the app database, this needs correction. Hondarrabi Zuri Zerratia produces pale, mineral white wines with bracing acidity, low alcohol, and a faint spritz that makes Txakoli the go-to pour in every pintxos bar from San Sebastián to Bilbao.

As a supplementary variety, Zerratia plays a supporting role to the dominant Hondarrabi Zuri (which covers 95%+ of Getariako Txakolina production). But progressive producers are leaning into it: its Petit Courbu DNA adds slightly more body, rounder mouthfeel, and aromatic complexity to blends. When forward-thinking Txakoli producers wanted to age wines on lees, add wood influence, or push structure, Zerratia became their go-to addition. Think of it as the spice rack that turns a simple meal into something memorable.

Insider Story

The Txakoli revival is one of Spain's best-kept wine secrets. In the early 19th century, Phylloxera nearly wiped Basque viticulture off the map, and by the 1980s, Txakoli had shrunk to a nearly extinct home-production wine drunk only by fishermen and farmers. The DO wasn't granted until 1989 (Getariako Txakolina) and 1994 (Bizkaiko Txakolina). The industry rebuilt itself almost from scratch — and Hondarrabi Zuri Zerratia was one of the varieties that came along for the renaissance.

The theatrical pour is its own story: bartenders in Basque pintxos bars lift a porron or bottle high above the glass and pour from a foot or more in the air, creating a stream that aereates the wine, amplifies the bubbles, and makes the whole thing a performance. It's not showmanship for tourists — it genuinely opens up the aromatics. Zerratia-blended Txakolis especially benefit from this treatment, as the Petit Courbu genetics contribute floral and citrus notes that bloom beautifully with oxidation.

Technical Deep Dive

Hondarrabi Zuri Zerratia is genetically identical to Petit Courbu, the southwestern French variety found primarily in Jurançon and Pacherenc du Vic-Bilh in Gascony. In the Basque Country it is classified as an authorized (but secondary) white variety across all three Txakoli DOs: Getariako Txakolina, Bizkaiko Txakolina, and Arabako Txakolina.

Viticulturally, it performs well in the cool, wet Atlantic climate of coastal Gipuzkoa. The "zerratia" (serrated leaf) distinction reflects a real ampelographic difference in leaf morphology. Vines are trained on high pergola-style trellises (the txakoli txakolindegi style) to maximize air circulation and reduce fungal pressure in the notoriously rainy Basque summers.

Winemaking: most Txakoli is cold-fermented in stainless steel at 14–16°C to preserve primary aromatics. Zerratia-dominant or high-Zerratia blends may see extended lees contact (up to 6 months sur lies) and occasionally neutral oak aging — tools the dominant Hondarrabi Zuri rarely needs. Typical alcohol: 10.5–12% ABV. Natural CO2 from lees contact gives the characteristic light spritz. Acidity is high (7–8 g/L as tartaric), which makes these wines exceptionally food-friendly.

Industry Secrets

Progressive Txakoli producers use Zerratia as a complexity lever. While pure Hondarrabi Zuri Txakoli is reliably consistent and commercially successful, adding 5–15% Zerratia elevates the blend without making it unrecognizable. The Petit Courbu character — white flowers, lemon verbena, slight nuttiness — threads through the dominant crisp citrus of Hondarrabi Zuri.

Another secret: Zerratia-blended Txakolis actually age better than straight Hondarrabi Zuri. Most Txakoli is marketed as drink-young (and it is), but high-acidity Zerratia blends from top producers can evolve interestingly over 3–5 years in bottle, developing lanolin and beeswax notes. Almost nobody does this — yet.

More red grapes

• Humagne Rouge
• Izkiriota
• Izkiriota Ttippia
• Jaen
• Juan García