Portocork

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Portocork Portocork is the premier supplier of natural cork closures to the North American wine industry. Portocork continues as an active CQC member today.

Portocork America is the premier supplier of natural cork closures to the North American wine industry. For close to three decades, our company has produced a wide range of natural cork closures, ranging from high-end still and sparkling wine cork to Twin Top® and Neutrocork® products designed for value wines. As a wholly-owned subsidiary of the Amorim Group, the world's largest and most recognized name in cork production, Portocork is proud to be the first in our industry to screen every single United States-bound cork bale for 2,4,6-trichloroanisole (TCA) using gas chromatography mass spectrometry (GC/MS). Since 2001, we have experienced an 80% reduction in TCA scores through the use of this technology. Portocork America was established in 1983 through a partnership between Portocork International and Fleming Packaging Group of Napa. The partnership continued until 1996 when Portocork International acquired 100% of Portocork America. Portocork was a founding member of the Cork Quality Council (CQC), which was established in 1993 with the goal of continuing to increase quality standards and awareness of the benefits of natural cork. Portocork co-sponsored TCA research that was conducted jointly by the CQC and ETS Laboratories to establish a non-subjective cork testing methodology using GC/MS. Portocork International, located in Santa Maria de lamas, Portugal, is the world's most technologically-advanced producer of cork. Portocork has developed ultra-modern production facilities to process natural cork which is sourced only from company owned and leased natural forests that have existed in Portugal for decades. We control the cork from the time it is harvested until it arrives at your winery. This complementary combination of centuries-old natural practices and state-of-the-art production facilities, along with rigorous testing both in our ISO-9002 certified Portuguese facilities (with in-house GC/MS) and our California facility located in the Napa Valley, assures that our cork is the highest quality and most consistent cork year after year. Portocork America provides the world's finest cork.

Did you know why do sparkling w**e corks have that distinctive mushroom shape?They don’t start that way.A sparkling w**e...
10/19/2026

Did you know why do sparkling w**e corks have that distinctive mushroom shape?

They don’t start that way.

A sparkling w**e cork begins as a cylindrical stopper. Once inserted into the bottle, pressure and the bottle’s neck cause the lower part to remain compressed while the exposed portion expands.

Over time, that creates the iconic mushroom shape we associate with celebration.

A shape shaped by pressure, time and cork.

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Why cork?Some materials become part of a culture.Cork is one of them.For centuries, it has accompanied w**e from the cel...
10/12/2026

Why cork?

Some materials become part of a culture.

Cork is one of them.

For centuries, it has accompanied w**e from the cellar to the table, protecting the bottle, allowing w**e to evolve, and becoming an unmistakable symbol of quality, tradition and excellence.

And after all those years of being part of w**e’s journey, cork becomes part of the moment we finally get to experience it.

When the bottle is opened, cork becomes part of something even greater: the ritual.

A quiet reminder that great w**e is not only about where it comes from or what is inside.

It is also about how we experience it.

That’s why cork.

Sustainability starts with what nature gives us.Every piece of cork begins with a living ecosystem.Harvested from the co...
10/06/2026

Sustainability starts with what nature gives us.

Every piece of cork begins with a living ecosystem.

Harvested from the cork oak without cutting down the tree, cork is a renewable material that grows back as part of nature’s own cycle.

Cork shows us that high-performance materials can also have a more responsible relationship with the planet.

For us at PortoCork America, sustainability isn’t just a concept.

It's part of where we come from, and where we're going.

Harvest season is the beginning of something special. 🍇Every September, vineyards around the world enter one of the most...
09/25/2026

Harvest season is the beginning of something special. 🍇

Every September, vineyards around the world enter one of the most important moments of the w**e year. Grapes are carefully harvested, capturing the character of the vintage and the place where they were grown.

From there, w**emakers begin transforming months of dedication and care into w**es that will eventually be shared around the world.

At Portocork, we know that protecting that journey matters.

Cork helps protect the w**e from vineyard to bottle, preserving its character and supporting its evolution over time.

Because every great w**e starts with a harvest. And every great bottle deserves the right closure.

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What does premium mean to Portocork?It means knowing cork inside and out.It means combining generations of expertise wit...
09/22/2026

What does premium mean to Portocork?

It means knowing cork inside and out.

It means combining generations of expertise with the latest technology.

It means rigorous quality control, continuous innovation and an uncompromising approach to performance.

It means understanding that every w**e is different, and that every closure matters.

But above all, it means never treating service as an afterthought.

At Portocork America, expertise, responsiveness and attention to detail are part of the experience we deliver.

Because excellence is not just what we make. It’s how we do it.

**eIndustry

September marks a new beginning. 🍷A new season. New ideas. New moments to savour.In w**e, some things are meant to evolv...
09/17/2026

September marks a new beginning. 🍷

A new season. New ideas. New moments to savour.

In w**e, some things are meant to evolve with time, while others are meant to protect that journey.

For centuries, w**e and cork have shared a remarkable connection. One carries the story of a place, a harvest and a moment in time. The other helps protect that story as it evolves.

A natural synergy, shaped by time.

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Every w**e has its own journey.CWINE gives w**emakers greater control over that journey through three oxygen transfer op...
08/29/2026

Every w**e has its own journey.

CWINE gives w**emakers greater control over that journey through three oxygen transfer options, allowing the closure to be matched to each w**e's style, aging potential, and intended evolution, all while delivering the consistency and natural performance of cork.

More control. More confidence. Naturally.

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Consumption Trends | What's shaping today's beverage market?The conversation around alcohol is evolving.Drinking less, b...
08/26/2026

Consumption Trends | What's shaping today's beverage market?

The conversation around alcohol is evolving.

Drinking less, but better - Consumers are increasingly choosing quality over quantity, making every drinking occasion more intentional and placing greater value on authenticity, craftsmanship, and the overall experience.

Premium experiences matter more than ever - From fine w**es to premium spirits, consumers are seeking products with a story, a clear sense of origin, and a strong commitment to quality, proving that value is no longer defined by price alone.

At Portocork America, we continue to evolve alongside the industry, delivering cork stoppers that meet the expectations of today's producers and tomorrow's consumers.

**eIndustry

Did you know?One of the biggest myths in w**e is that cork "lets the w**e breathe."In reality, cork acts as a highly eff...
08/21/2026

Did you know?

One of the biggest myths in w**e is that cork "lets the w**e breathe."

In reality, cork acts as a highly effective seal while allowing a slow and controlled transfer of oxygen over time, helping w**es evolve as they age.

The science is far more fascinating than the myth.

The best innovations don't replace nature.They learn from it.For centuries, cork has proven that performance and sustain...
08/19/2026

The best innovations don't replace nature.

They learn from it.

For centuries, cork has proven that performance and sustainability can exist in perfect balance - protecting w**es while preserving one of the world's most valuable ecosystems.

Nature remains our greatest source of innovation.

Address

164 Gateway Road East
Napa, CA
94558

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