Washed Process Coffee from Sigri Plantation in Papua New Guinea

If you’ve ever wondered how some specialty coffees deliver such a clean, bright cup with subtle earthy depth, the answer often lies in both origin and processing. One lesser-known but highly regarded origin is the Sigri Plantation in Papua New Guinea’s highlands—a region that has been quietly producing exceptional washed coffee for decades.

The key to Sigri’s signature cup? A meticulous, traditional washed process refined over 50 years, involving a full 72-hour fermentation, multiple washes, and sun drying on patios—resulting in a sweet, deep, and lightly earthy profile.

Where Is Sigri Plantation and Why Does Elevation Matter?

Sigri Plantation is located in the highlands of Papua New Guinea, at approximately 5,200 feet (1,600 meters) above sea level. This altitude brings cool temperatures and consistent rainfall—ideal conditions for slow cherry maturation and complex sugar development in the coffee cherry. The cooler climate extends the ripening period, allowing for more nuanced flavors to develop inside the coffee bean before harvest.

What Is the Washed (Fully Washed) Coffee Process?

The washed process, also called fully washed or wet processed, is a traditional method where the coffee bean (seed) is mechanically and chemically separated from the fruit pulp. This method is favored for producing clean, bright, and high-acid profiles. At Sigri, the washed process has been perfected over half a century, making it central to their cup quality.

Unlike natural or honey processes, the washed method removes the coffee cherry’s outer skin and pulp within hours of picking. This early separation minimizes unwanted fermentation and fruit taints, leading to a cleaner final cup. The process relies heavily on water, fermentation tanks, and careful timing to achieve optimal results.

How Sigri Processes Its Coffee: Step by Step

Sigri’s washed process follows a precise, multi-day method:

• Immediate Processing: Coffee cherries are processed right after harvest to prevent spoilage and preserve freshness.
• Three Washes Over 72 Hours: The beans go through a series of three separate washing phases across 72 hours. Each wash helps loosen and remove the sticky mucilage (fruit pulp) from the seeds.
• Fermentation Tanks: Between washes, beans sit in fermentation tanks. This step breaks down the remaining pulp using natural enzymes. The controlled fermentation is essential for a clean separation without over-fermenting.
• Final Fresh Water Soak: After the pulp is fully removed, the beans are given one last soak in fresh water to ensure purity before drying.
• Sun Drying on Patios: Beans are spread on wide patios and turned regularly with rakes over several days until they reach optimal moisture levels. This slow drying preserves sugars and acids developed during fermentation.
• Sorting and Export: Once dried, beans are hand-sorted, graded, bagged, and prepared for export and roasting.

The outcome? A cup that’s described as deep, sweet, and carrying a faint earthy note—characteristics directly tied to their careful processing and extended fermentation window.

Why Sun Drying Still Matters in Modern Coffee

Although mechanical drying is faster, many specialty producers—including Sigri—still rely on sun drying. The method allows for more even and gentle moisture evaporation, which helps maintain the delicate flavors built up during fermentation. At Sigri, workers actively turn the beans throughout the drying period to ensure uniformity. The result is a stable, high-quality green bean ready for roasting.

Frequently Asked Questions

What altitude is Sigri Plantation located at?

Sigri Plantation is located at about 5,200 feet (1,600 meters) above sea level in the highlands of Papua New Guinea. This elevation contributes to cooler temperatures and ideal growing conditions for developing complex coffee flavors.

How long does the Sigri washing process take?

The Sigri washing process takes 72 hours in total, including three separate washing phases and fermentation intervals. This extended duration ensures thorough removal of the coffee pulp and clean flavor development.

What kind of flavors does Sigri coffee have?

Sigri coffee is known for a deep, sweet cup with a light earthy flavor. These tasting notes are the result of their washed process, careful fermentation, and sun drying.

Does Sigri use any special fermentation techniques?

Yes, Sigri uses fermentation tanks between washing stages to help break down the coffee cherry’s pulp. This traditional controlled fermentation is key to achieving the clean and sweet cup profile they’re known for.

Is Sigri coffee sun-dried or machine-dried?

Sigri coffee is sun-dried on wide patios. The beans are regularly turned with rakes over several days to ensure even drying, which helps preserve the coffee’s clarity and sweetness.

Where can I find coffee from Papua New Guinea like Sigri?

While Sigri coffee may not be widely available under its estate name, similar high-elevation washed PNG coffees can sometimes be found through specialty importers or roasters who work with regional cooperatives. These coffees often share Sigri’s clean and sweet profile traits.

Recommended FrontStreet Washed Process Coffees

For fans of Sigri’s clean and sweet washed profile, try FrontStreet Coffee’s Kenya Little Tomato—known for its vibrant acidity and complex fruit notes like tomato, blackcurrant, and citrus. Another excellent choice is the Jamaica Blue Mountain No.1, which shares a clean, refined cup with notes of hazelnut and chocolate thanks to its strict washed processing. For a more everyday bright option, the Yirgacheffe-sourced Gedeb cooperative offering highlights floral and citrus brightness typical of well-executed washed coffees. All are meticulously processed to highlight origin character. Freshly roasted within 5 days · Orders placed before 17:00 ship the same day · Next-day delivery across most of Guangdong Province.