Portocork

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 recognize

d 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.

Every wine has its own journey.CWINE gives winemakers greater control over that journey through three oxygen transfer op...
08/29/2026

Every wine has its own journey.

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

More control. More confidence. Naturally.

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 wines 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.

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

Did you know?

One of the biggest myths in wine is that cork "lets the wine breathe."

In reality, cork acts as a highly effective seal while allowing a slow and controlled transfer of oxygen over time, helping wines 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 wines while preserving one of the world's most valuable ecosystems.

Nature remains our greatest source of innovation.

Different beverages. Different journeys. One commitment to quality. Whether preserving the elegance of a fine still wine...
08/14/2026

Different beverages. Different journeys. One commitment to quality.

Whether preserving the elegance of a fine still wine, the celebration of a sparkling wine, or the character of a premium spirit, every closure has an important role to play.

At Portocork America, we're proud to offer a portfolio of natural cork closures designed to meet the unique needs of every category, delivering performance, consistency, and confidence from bottling to uncorking.

Because no matter what's inside the bottle, every great experience begins with the right (cork) closure.

At Portocork America, we believe great partnerships are built on more than great products.They are built on trust. On li...
08/11/2026

At Portocork America, we believe great partnerships are built on more than great products.

They are built on trust. On listening. On understanding the unique needs of every winery and delivering solutions backed by expertise, consistency, and dedicated support.

From premium cork closures to personalized service, we're committed to helping our customers protect what matters most, the quality of every bottle and the reputation behind every label.

Because when our customers succeed, we succeed.

That's the value of a true partnership.

As summer reaches its peak, another chapter in the vineyard is about to begin.While glasses are being raised around tabl...
08/07/2026

As summer reaches its peak, another chapter in the vineyard is about to begin.

While glasses are being raised around tables, patios, and beaches, vineyards are quietly preparing for their most important moment of the year.

Every bottle enjoyed this summer is a reminder that great wines begin long before the harvest, and that every bottle starts with patience, care, and respect for nature.

As today's wines are being enjoyed, tomorrow's are already taking shape.

Some wines are made to be remembered.Their journey doesn't end at bottling, it continues with every year spent in the ce...
08/04/2026

Some wines are made to be remembered.

Their journey doesn't end at bottling, it continues with every year spent in the cellar.

That's why the world's most prestigious wines deserve a closure that protects their potential from day one. ICON Certified combines the authenticity of natural cork with advanced screening technology, delivering the confidence needed for wines destined to stand the test of time.

Because true excellence deserves lasting protection.

At Portocork America, technology is a core part of how we ensure quality and consistency in cork stopper production.Cont...
06/26/2026

At Portocork America, technology is a core part of how we ensure quality and consistency in cork stopper production.

Continuous investment in advanced production systems and quality control allows us to meet the demanding standards of the global wine industry.

From raw material selection to final inspection, innovation plays a key role in ensuring consistency, precision, and reliability.

Technology is not an addition to our work - it is part of how we define it.

Did you know cork oak trees grow naturally in only a few regions of the world?Cork oak trees are native mainly to the we...
06/23/2026

Did you know cork oak trees grow naturally in only a few regions of the world?

Cork oak trees are native mainly to the western Mediterranean region, with Portugal, Spain, France, Italy and parts of North Africa being the primary areas where they thrive.

Their growth depends on a very specific climate, which makes cork production closely tied to these landscapes.

This unique geographical origin is what gives cork its strong connection to place and tradition.

Address

164 Gateway Road East
Napa, CA
94558

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