Innovation Fueled by Eight Decades of ExperienceInnovation Fueled by Eight Decades of Experience

Founded on the Italian island of Sardinia in 1941, Ganau relies on eight decades of experience and the integration of modern technology in its pursuit to produce the finest corks possible. One of the largest cork producers in the world, Ganau is the first choice of successful winemakers who value purity, performance and reliability.


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Natural Corks

Unparalleled Purity

Taking advantage of cork’s intrinsic characteristics, Ganau’s line of natural corks is the preferred seal of prestigious winemakers around the world. Hand-cut by skilled craftsmen and subjected to a two-step cleaning process, Ganau’s natural cork closures redefine the traditional wine closure for the 21st century winemaker, embodying the pinnacle of quality and simplicity.

Natural Corks

Discover the Possibilities

Ganau offers a full line of natural cork in a variety of visual grades, as well as the choice of natural or hydrogen peroxide color. Ganau’s natural finish uses a basic water wash to preserve the natural raw cork texture. Clients can also choose a non-immersion hydrogen peroxide wash process designed to provide the improved aesthetic with minimal exposure to the washing agents. By offering a full range of natural corks, Ganau ensures that their clients receive the highest quality and purest natural corks available.

Technical Corks

An Innovative and Accessible Alternative

Ganau’s wide spectrum of technical corks provides a viable alternative to natural cork closures. Ganau employs cutting-edge technology and processes to ensure consistency and quality in each of its technical cork lines, from the standard 1+1 to the newly added PRIMO and UNIQ lines of micro-granulated corks.

In order to assure performance and purity, Ganau produces all granules utilized for technical corks from dedicated raw material and wastage generated from the production of solid natural corks and discs.

C3 Corks
(1+1)

Ganau’s premier C3 line of technical corks consists of agglomerated bodies with solid natural cork disc ends.

The agglomerated bodies are composed of cork granules that are diligently cleaned before being selected for size uniformity, weight and quality. These bodies are individually molded (instead of extruded) to assure improved bottling performance, consistent seal and easy extraction. Once the C3 cork bodies are formed, solid natural cork end discs are added, providing the visual appearance of solid cork at a competitive price point.

C2 Corks
(0+1)

Ganau also produces the C2 line of corks, a technical cork with a single solid cork end disc. C2 corks are supplied to sophisticated bottling lines equipped with orientator machines that position the natural cork disc to be the only element touching your wine. The C2 line offers the technical and after-bottling performance of the C3 line with additional cost savings.

UNIQUNIQ

Validated by several independent laboratories and considered the undisputed leader of micro-granulated corks, the UNIQ line represents the cork of choice for 21st century winemakers.

Constructed from natural cork micro-granules selected for uniform sizing of 1mm or smaller, a neutral bonding agent, and high quality microspheres, UNIQ offers superior organoleptic performance, rapid recovery rate, mechanical homogeneity and smooth extraction.

Micro-granules used for UNIQ are treated with Ganau’s temperature driven cleaning process, mixed with microspheres for added elasticity and individually molded for consistency.

UNIQ is the most advanced technical cork option available to winemakers looking for superior technology, cleanliness and dependability.

PRIMOPRIMO

PRIMO corks combine quality natural ingredients with cutting-edge technology. Designed to deliver consistent performance and quality, they are individually molded for greater uniformity and superior appearance.

Premium micro cork granules are selected for uniform sizing of 2mm or smaller before being treated with temperature (up to 180o Celsius) to drastically reduce TCA. Created from natural cork materials using a neutral bonding agent, PRIMO offers an economic seal for non-aging wines.

The PRIMO line takes full advantage of Ganau’s unique and uncompromising production process.

Sparkling Corks

As the leading producer of sparkling wine corks, Ganau has applied stringent cleaning processes and implemented advanced quality control measures in order to meet the demanding standards of top Champagne and Sparkling Wine houses.

Traditional Sparkling
(0+2)

Ganau’s line of traditional sparkling wine corks are produced with superior cork granules selected for uniform size between 4 and 8 mm and cleansed with Ganau’s unique processes, before being individually molded to guarantee a uniform seal and excellent pressure resistance. Once the body is molded, two solid cork end discs are added to ensure that only the purity of natural cork comes into contact with the wine.

UNIQ SparklingUNIQ Sparkling Sparkling

Ganau’s UNIQ line of sparkling wine closures is precision-engineered with uniform micro-granules and no disc ends, offering benefits such as significant TCA reduction, excellent organoleptic performance, rapid recovery rate and easy extraction.

Composed of micro-granules selected for uniform size of less than 1mm, a neutral bonding agent, and microspheres, the UNIQ line has been positively tested by the most prestigious French Champagne houses, as well as approved by the Comité Interprofessionel du Vin de Champagne after undergoing rigorous testing.

PRIMO SparklingPRIMO Sparkling Sparkling

Ganau’s PRIMO line of sparkling wine closures is composed of cork micro-granules selected for uniform size of less than 2mm and an elastic bonding agent specifically used for sparkling wine applications. PRIMO corks offer an economical, thus reliable choice for quick consumption sparkling and semi-sparkling wines.

Ganau Method

In order to provide winemakers with the finest cork closures in the world, Ganau’s vertically-integrated manufacturing allows for precision control over each step of production. From maintaining cork forests to deep-cleaning processes, Ganau has revolutionized the way raw cork is processed to produce corks that exceed the highest industry standards.

Forests + Harvesting

As a 100% natural, sustainable and recyclable material, Ganau’s commitment to cork begins with a dedication to nurturing company-owned forests and supporting selected Mediterranean growers.

Ganau’s sustainable practices rely on decades of knowledge and a skilled team, in order to guarantee the cork oaks are never harmed during the extraction process. To further guarantee quality and a commitment to sustainability cork planks are never sourced from secondary suppliers or from unknown forests of origin.

The Ganau companies obtained FSC (Forest Stewardship Council) Chain of Custody Certification to support responsible forest management

As a renewable resource, Ganau understands the amazing benefits of cork and is dedicated to long-term sustainable practices.

Plank Selection + Storage

Once the raw cork has been harvested, the planks are selected for thickness and quality, thus discarding those with any critical defects. The chosen planks are stored at Ganau facilities in Sardinia, Italy and Montijo, Portugal, where the utilization of plastic pallets and sloped concrete floors serve to improve air circulation and drainage, eliminating the possibility of contamination. The raw planks are left to cure for a minimum of eight months in order to stabilize before being processed into corks.

Ganau RevolutionGanau Revolution

Ganau’s custom-designed high-pressure rain system autoclaves utilize 120o Celsius water and steam to penetrate deeper into raw cork planks and dramatically decrease TCA levels. Ganau Revolution’s specialized non-immersive cleaning steps employ fresh water and extreme temperatures to consistently achieve maximum purification, while reducing water usage and cross-contamination. The proprietary Ganau Revolution purification process represents the latest stage in the development of traditional boiling methods and is unrivaled in taint reduction.

Hand Cutting

Cork planks are hand-cut into strips within 24 hours of completing the Ganau Revolution cleaning process, preventing an unnecessary waiting period at high moisture levels which can lead to mold growth and possible contamination. After passing visual inspection, the strips are hand-cut by skilled employees, first into squares and then into cylindrical natural corks. The excess material created during the production of natural corks and discs is subsequently broken down into granules to be later molded into agglomerated corks.

TF Process

Following the cutting stage, the raw corks and discs are submitted to Ganau’s second cleaning process. Centered on a custom-manufactured autoclave system, the TF cleaning system penetrates deep into corks and discs with pressurized steam to further diminish TCA. Ganau’s cleaning system was the first in the cork industry to implement an autoclave in the processing of cork products.

Granule Selection + Cleaning

Cork granules are selected by weight and size before being extensively cleaned in a proprietary system, where high temperatures cause the presence of TCA within the cork to be displaced and steam to move volatile compounds outside the system. Each cleaning cycle is tested for TCA (through our GCMS’s) before proceeding to the next stage of molding.

Individual Molding

After cleaning and testing for TCA, granules are molded to produce Ganau’s line of agglomerated corks. All of Ganau’s technical corks are individually molded instead of extruded to produce consistent densities while requiring minimal glue.

Completion + Selection

Finished cork products are rinsed of any production residue, using water for a natural finish or hydrogen peroxide for a white finish, before being rapidly dried by specialized machines to immediately remove any excess moisture. Corks are sorted first electronically and then by employees, simultaneously dividing the finished corks into different visual classes and eliminating any corks with flaws or critical defects.

Fire Branding + Ink Printing

Whether order quantities are in the millions or few thousands, Ganau offers cork branding to all of its clients. Ganau can assist in designing artwork, as well as work with clients to execute fire and ink branding that meets their requirements. Fire branding is the preferred method of prestigious winemakers, since the final brand consists of a neutral imprint, whereas ink branding may benefit clients that require complex artwork or a more economical alternative to fire branding.

Lubrication + Shipping

In the final step of the production process, all cork products are lubricated using Ganau’s exclusive system, which achieves perfectly even and consistent lubrication for excellent bottling performance, optimal seal and easy extraction. Once lubricated, corks are moisturized, packaged and sealed to ensure maximum quality upon delivery.

Quality Control

Ganau has sustained its long-standing reputation for unparalleled quality by developing industry-leading cleaning and quality control procedures in the reduction of taint from cork closures. Beyond the ultimate goal of eliminating taint, Ganau’s implementation of rigorous quality control standards throughout the production process guarantees consistent performance from its full line of cork closures.

Testing For Quality

Ganau employs sensory and GCMS screening tests to diligently monitor the presence of TCA in raw and processed cork materials. Ganau soaks thousands of corks on a daily basis, drastically exceeding industry standards in order to study background aromas and TCA concentrations. GCMS tests are performed through production and finished product, ensuring that only the purest corks enter the final production stages.

Beyond TCA screening, Ganau utilizes precision electronic analyzers to measure dimensions, weight and moisture levels of cork products throughout the production process, making certain that the final corks meet both physical and mechanical specifications. Ganau is also well known for its uniform method of grading corks, performed by both specially-trained employees and carefully calibrated electronic eyes.

In applying a wide spectrum of quality control measures, Ganau relies upon modern technology and skilled employees to provide winemakers with some of the purest and highest-quality corks in the world.

Testimonial

TESTIMONIAL

Peter Michael Winery

Just like choosing the finest barrels, the selection of the corks is one of the most important steps that contributes to the quality of our wines.  From the origin of the forest to the coating of the wine cork – every step has a direct impact on the quality. Since 2006, I have evaluated and selected the physical and organoleptic qualities of the Sardinian corks from Ganau. Their density is unrivaled and ideal for the long term aging of our wines. In addition to the chemical analysis, the Ganau family, Mariella Ganau, her team and our winery run multiple cork sensory tests in order to select  “La Crème  de la crème” among the lots.

Nicolas MORLET, Winemaker

Testimonial

Quintessa

I have been a satisfied customer of Ganau America for over ten years. The quality and consistency of their corks is impressive. As a company, they are open, honest, responsive, and dedicated to quality and customer service.

Charles Thomas
Winemaker

Testimonial

Pott Wine

For all of my wines and for those that I consult for I always use Ganau corks.  Ganau corks are unsurpassed for their quality by any other producer.  Combine this with strict and rigorous attention to detail and a draconian program to combat taint and you have the world’s best cork producer.

Aaron Pott
Winemaker

Testimonial

Corra Wines

Our vineyard and winery teams strive for perfection at every point from bud-break to bottling.  When it comes to trusting a natural cork to keep flavors safe during the rest of the wine’s journey, I need to know that my cork supplier takes as much pride in their product as I do in mine.  Ganau seeks the same perfection that I do.

Celia Welch
Winemaker

Testimonial

Flowers Vineyard and Winery

It has been a pleasure to work with Ganau during my tenure at Flowers.  From an aesthetic standpoint, I feel that Ganau is unrivalled in creating a beautiful, natural product.

From a quality perspective, they take meticulous care in crafting corks that are free from imparting undesirable aromatic qualities to our wines.

Dave Keatley
Winemaker

Testimonial

Boisset Family Estates

Three years and millions of corks without a single quality or delivery issue.  Our decision to use Ganau is reaffirmed every day that we bottle.  Their level of quality, professionalism and response time has made them our “go-to” vendor for cork.

Kirk Wrede
Production Manager

Locations

Founded on the Italian island of Sardinia in 1941, Ganau has grown to become Italy’s largest producer of corks. Ganau has expanded production beyond Italy to harvest, store and produce raw discs, corks and granules in Montijo, Portugal, and serves French wineries from locations in Epernay, along with US clients via their facility in Sonoma, California. Ganau has augmented its operations across the globe in order to provide winemakers with the highest quality corks available.

About

Family-owned and operated for three generations, Ganau has spent decades developing the way cork is processed in order to meet the demands of eminent winemakers around the world. Ganau focuses on sustainable practices and innovative production techniques, as it aims to produce optimally performing wine closures while maintaining cork’s status as a renewable resource.


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Contact

Sugherificio Ganau S.p.A.
Zona Industriale
07029 Tempio Pausania (OT)
Italy
T +39 079 630 625
F +39 079 670 569
ganau@ganau.it

Ganau France S.A.
ZAC des Terres Rouges
18 Allée de la Côte des Blancs
51200 Epernay
France
T +33 326 569 802
F +33 326 555 318
contact@ganau.fr

Ganau America
21900 Carneros Oak Lane
Sonoma, California 95476
USA
P 707.939.1774 / 800.694.CORK
F 707.939.0671
info@ganauamerica.com

Ganau Portugal Cortiças, S.A.
Estrada do Peixe, nº 283
Alto Estanqueiro -Jardia
2870-606 Montijo
Portugal
T +351 212 315 732
F +351 212 315 733
geral@ganau.pt