The material that seals wine
There's one detail that every quality wine bottle in the world has in common: a cork. Small, silent, often taken for granted — yet it is the result of millennia of history, an extraordinary tree, and a craft that has found its ideal home in Sardinia.
The cork oak characterizes a significant part of the Sardinian landscape — from Gallura to Sulcis, from Goceano to Mandrolisai — and Sardinia produces approximately 80% of the national cork production, with almost 90,000 hectares of land dedicated to this extraordinary tree.
A material that has accompanied wine for approximately 3,000 years. And which, even today, despite synthetic alternatives, remains irreplaceable for wines that deserve to age.
The cork oak: a tree that knows how to wait
The cork oak (Quercus suber) is a plant of great personality. It can reach 20 meters in height, live up to three hundred years, and develops roots that penetrate many meters into the soil — allowing it to survive even the most intense droughts.
It prefers temperate climates and altitudes below 1,000 meters: exactly the conditions of the Sardinian landscape, where granite hills, a mild climate, and winter rains create the ideal habitat.
Its secret lies in its bark: a thick, porous layer that wraps the trunk and branches like natural armor, protecting the tree from the elements and even from fires. That bark — cork — has unique characteristics: elasticity, lightness, impermeability, resistance. Qualities that make it useful in the most diverse fields, from construction to clothing, from craftsmanship to the wine industry.
Extraction: a decennial ritual
Cork is not cut: it is extracted — with care, respecting the tree's rhythms.
The bark is harvested every 10 years, and never before the plant is at least 18 years old. A slow cycle, dictated by natural growth, that requires patience and respect. Like the vineyard, like the beehive: quality comes from waiting.
The first extraction is called demaschiatura (de-masking) — and can only begin when the oak has reached at least 60 cm in circumference and 120-130 cm in height.
The extracted cork is divided into two very different types:
Male cork — this is the cork from the first extraction. Hard, irregular, with a coarse texture that reflects the plant's youth. Not suitable for the most prized processes, but valuable in other industrial and construction uses.
Gentle cork — this is the cork extracted from the second harvest onwards, ten years after the demaschiatura. Softer, more uniform, more elastic. It is destined for quality processing — and, above all, for the production of wine corks.
The cork: where cork meets wine
The cork stopper is not a simple accessory. It is the guardian of the wine.
Thanks to its unique cellular structure — millions of microscopic air chambers — cork is elastic, impermeable to liquids but semi-permeable to gases. This characteristic allows the wine to breathe slowly over time, evolving gracefully without oxidizing too quickly. It is why great aging wines are still sealed with natural cork: no synthetic material has been able to replicate its properties in the long term.
In Sardinia, this tradition has very deep roots. The same trees that characterize the island's landscape, which have seen Nuragic, Phoenicians, and Romans pass by, still produce today the material that seals the bottles of the most important Sardinian wines.
Cork and wine: an ancient bond
Every bottle of Colline del Vento is sealed with a cork stopper. It is not a commercial choice — it is a choice of consistency.
Our wines are born from a territory, from a land, from a natural balance that we respect at every stage: from the vineyard to the cellar, from the cellar to the bottle. Cork — a child of the same Sardinia, of the same respect for nature's rhythms — is the most honest way to conclude that journey.
A cork extracted from an oak that has waited twenty years. A wine that has waited for the right vintage. A glass that awaits the right moment to be opened.
Everything, in Sardinia, knows how to wait.
Salude e trigu.
