La Viga: The Lever Press That Shaped the Traditional Wines of León

A twelve-metre lever

Hidden in stone cellars across north-west Iberia — León, Bierzo, Galicia, northern Portugal — there are still in working order machines that look like they belong to classical antiquity. They are called lagares de viga.

The viga is exactly what its name says: a massive oak trunk between 8 and 15 metres long, slightly curved, acting as a lever to press grapes. At one end sits the lagar itself — a square stone or wood vessel where the trodden grapes are placed. At the other end, a vertical screw holds a granite counterweight of 800 to 1,200 kilograms.

When the winemaker turns the screw, the counterweight descends, the viga slowly drops, and the grapes are pressed with enormous but extremely progressive force. The juice — first the mosto yema (free-run) and then the mosto de prensa (press wine) — runs down stone-carved channels into a lower basin, where it is collected in barrels.

Why slow pressing matters

The technical singularity of the viga press is time. While a modern pneumatic press squeezes the grapes in 30 minutes at pressures up to 2 bar, a traditional viga operates over 36 to 72 hours at pressures rarely above 0.3 bar.

The oenological consequences are notable:

• Less extraction of bitter tannins: the seeds and stems — the most astringent parts of the cluster — are not crushed.
• Greater aromatic finesse: oxidation is slow and self-regulated by the weight itself.
• Cleaner must: suspended solids are minimal, reducing the need for filtration.

The result is a must that retains, already in the vat, a delicacy difficult to reproduce with modern technology. Winemakers in Bierzo and Ribeira Sacra speak — not without nostalgia — of "wine of the viga" as a benchmark of elegance.

Architecture for force

The lagar de viga is not a portable machine. It is architecture. The viga itself — weighing between 1,500 and 3,000 kilograms depending on the oak — is anchored with iron mortising into the stone wall of the cellar, which must be reinforced to take the load. The lagar basin is usually carved from a single granite slab. The counterweight hangs from a screw of oak or chestnut, in some cases with threads cut entirely by hand — a feat of carpentry.

In El Bierzo and the Ancares, working examples still survive. In Ribeira Sacra (Galicia) more than 70 lagares de viga have been catalogued, several of them protected as Bien de Interés Cultural (cultural heritage). In León province — Cacabelos, Villafranca del Bierzo, Corullón — restored lagares are fired up every harvest.

The winemaker''s gesture

Operating a viga is not a one-person job. To "drop the viga" you need a team of four or five: two turn the screw, two adjust the cap, one records the must coming out. The operation is divided into vueltas (turns): every two, three or twelve hours the screw is tightened by half a turn, the viga drops a few centimetres, and a new stream of juice runs out. Patience is measured in drops.

In a good harvest, a single viga can press between 6,000 and 12,000 kilograms of grapes in a week. That is little compared to industrial presses. It is exactly what a family project needs.

Why it matters today

As industrial winemaking grows more uniform, many growers in north-west Iberia are returning to the viga. Not from nostalgia, but for oenology. Pneumatic presses, perfect for young wines and high volumes, do not always produce the subtlety required for ageable wines from Atlantic climates. The viga, slow and delicate, offers an alternative that combines ethnographic heritage with measurable wine quality.

For us, in León, recovering the viga is to remember that wine was — for centuries — a collective, slow and precise work. And that the result, in a good vintage, shows in the glass.

To see one in action

In our private experience, if your dates fall during harvest, we can take you to a Bierzo cellar where the viga is still being dropped. Ask us about September and October.