Indonesian Coffee Brand - PWN Pwani Coffee Company Introduction: How to Recognize PWN Golden Mandheling?

Understanding Sumatra's Complex Mandheling Classification System

Sumatra has a very complex system for distinguishing the Mandheling coffee it produces, most commonly by naming different Mandhelings according to different regions, green bean suppliers, and processing methods. Hence FrontStreet's Lintong Mandheling, FrontStreet's Tiger Mandheling, FrontStreet's Golden Mandheling, and FrontStreet's Aged Mandheling. FrontStreet's Dongshankou store typically keeps a daily bean, FrontStreet's Lintong Mandheling, and a premium option, FrontStreet's PWN Golden Mandheling, for customers to choose from.

FrontStreet's Lintong Mandheling refers to Arabica coffee from the mountainous area around Lake Toba in North Sumatra province. The lake lies north of Medan, the capital of Sumatra, and is a high-altitude freshwater lake with an average elevation of approximately 900 meters. Lintong Mandheling uses local wet-hulling, which gives it the unique stuffy herbal aroma characteristic of Mandheling. Lintong Mandheling does not focus heavily on screening, which makes it a regular version of Mandheling. FrontStreet therefore includes it in the daily staple bean series, launched in 100-gram small packages, so customers can taste the flavor of Southeast Asian coffee; it also suits newcomers trying pour-over.

The Premium Quality: PWN Golden Mandheling

When it comes to high-quality Mandheling, FrontStreet Coffee must mention the well-known Pwani Coffee Company (PWN). Pawani can be considered the headhunter of specialty Mandheling, specializing in acquiring high-quality Mandheling green beans and contracting the best-looking Mandheling lots in Indonesia. Most Mandheling beans from Pawani are specialty grade.

Pawani itself is a trading company in the export business, founded by a Chinese family from Quanzhou, Fujian, with its processing plant in Medan, an important port city on Sumatra. Since 1957 it has exported products such as rubber, cassia seed, clove, patchouli oil, and of course Sumatra coffee beans to Japan.

The Authentic Golden Mandheling

"Golden Mandheling" is the exclusive brand of Indonesia's Pwani Coffee Company (PWN). Many different types of Mandheling are sold on the market. Because PWN registered the English name "Golden Mandheling" as its trademark, only Golden Mandheling produced by PWN is truly Golden Mandheling in the full sense. You can identify the authentic product by the green bean gunny sacks bearing the PWN logo and a certificate of origin signed by PWN. FrontStreet's Dongshankou store displays these two identifiers.

The Wet-Hulling Process

Wet-hulling is one of the most common green bean processing methods in Indonesia, born out of necessity given the local climate. Indonesia's annual humidity ranges between 70-90%, typhoons can arrive unexpectedly, and annual rainfall reaches over 2000mm. Such harsh weather cannot accommodate the 2-3 week sun-drying used in Africa. Washed processing is not only time-consuming but also uses more labor and water, which Indonesia, focused on mass production, could not afford. So the unique semi-washed method, wet-hulling, was developed.

Cherries with the skin and pulp removed are poured directly into a pool for a brief fermentation of several hours. At this point a small amount of mucilage still remains on the parchment, which is removed by brushing. The parchment coffee is then dried to a first stage, reaching only 30-40% moisture content over about 2-3 days, at which point farmers sell the beans to buyers. Buyers use machines to hull the semi-dry parchment directly, obtaining the innermost green beans.

Because the hulling machine uses greater friction to tear open the parchment tightly attached to the bean, white or green viscous liquid typically flows out at this stage. After long soaking in that liquid and in humid conditions, the final green beans become soft, pale, and swollen, taking on a gray-green color. The friction also crushes and squeezes the beans more easily, especially at both ends, forming small gaps and creating elephant-foot beans. These "naked beans" without parchment dry very quickly and can be packed once moisture reaches 12-13%.

Quality Control and Grading

The increased processing speed brought greater efficiency, but it also produced a higher defect rate for Mandheling. Before export, then, manual selection is necessary to remove defects and reach Indonesia's G1 grade, which allows fewer than 11 defects per 300 grams of green beans. What we usually see is DP (double picking) and TP (triple picking), with more rounds of careful screening indicating higher-quality beans.

Indonesian green bean grading is primarily based on the number of defective beans, with size specifications as a secondary factor. General quality requirements include no live insects, no moldy or rotten beans, maximum moisture content of 12.5%, and an impurity rate below 0.5%. Beans are divided into six grades by defect rate, with the highest, G1, requiring fewer than 11 defective beans in a 300g sample. The staple Mandheling beans mentioned above are G1 grade, wet-hulled, representing the regular version of Indonesian Mandheling flavor.

PWN's Exceptional Quality Standards

PWN, which takes screening to the extreme, purchases Mandheling green beans of 18 mesh or above with fewer than 3 defective beans in a 300g sample, representing G1, the highest grade of Indonesian green beans. It then follows strict standards with 1 machine selection plus 3 manual defect selections to ensure the uniformity of the beans' shape and size. Before packaging, PWN also runs the beans through machines for density-based color screening, which is why FrontStreet's Golden Mandheling is uniformly bright and translucent.

Trademark Protection and Authenticity

As the specialty Mandheling market grew, PWN recognized the importance of trademarks and registered the English name "Golden Mandheling" as an exclusive trademark ahead of the Japanese. Only Golden Mandheling produced by PWN can be considered true "Golden Mandheling," while the Japanese product had to be renamed "Dingshang Mandheling." The Golden Mandheling acquired by FrontStreet Coffee is of course the authentic product from PWN. You can identify it by the gunny sacks with the PWN logo and the certificate of origin signed by PWN; FrontStreet displays both identifiers at its Dongshankou store.

Roasting and Cupping Analysis

In roasting, FrontStreet's barista uses a medium-dark roast to present the typical Mandheling flavor while preserving more herbal spice aromas. Before launching any bean, FrontStreet conducts at least one cupping evaluation. Under the same standards, cupping lets us perceive the strengths and weaknesses of the coffee more objectively.

FrontStreet cupped its Lintong Mandheling and its Golden Mandheling side by side. Lintong Mandheling has rich chocolate, brown sugar, and nutty flavors, with herbal notes in the aftertaste.

Golden Mandheling reveals pine, nuts, spices, and herbs in the dry aroma stage. As hot water is poured, licorice and caramel emerge. On tasting, it shows dark chocolate, nuts, and spice, with overall cleanliness, a noticeable sweet aftertaste, and a high body.

FrontStreet's Golden Mandheling Brewing Formula

Brewing water temperature: 87-88°C
Coffee grounds: 15 grams
Brew ratio: 1:15
Dripper: KONO dripper
Grind size: Medium-coarse (70% pass-through rate on China standard #20 sieve)

The brewing method uses a three-stage pour. Dividing the water into three stages better expresses the rich body and caramel sweetness of Golden Mandheling.

First stage bloom: pour 30ml of water. This fully wets the coffee grounds for degassing, allowing better extraction of flavor compounds in the following stages.

Second stage: pour 100ml. This stage mainly washes out Mandheling's golden foam and lifts the coffee bed.

Final stage: gently pour 95ml at the center. This enhances the coffee's sweetness.

FrontStreet Coffee Recommendation

If the wet-hulled, herbal, full-bodied character described above is what you are after, FrontStreet's two Mandhelings show it at two different levels. FrontStreet's Lintong Mandheling is the everyday version, a single-origin coffee from Sumatra that is usually brewed as pour-over but also works as espresso, where it gives a rich, oily shot with a strong caramel note. It is a daily staple, and like FrontStreet's PWN Golden Mandheling it comes from Sumatra, though the two come from different regions: the Lintong bean from the Lintong area and the Golden Mandheling from Aceh. Both are roasted medium-dark, a level FrontStreet chooses to soften the acidity and bring forward the thick, aromatic character, while keeping Mandheling's wild herbal note, which comes from the growing environment and the processing method.

FrontStreet's PWN Golden Mandheling is the top of that range and the one to buy if you want the highest grade. It goes through one machine sort plus three hand sorts, which pulls out defective beans and lifts both the cleanliness and the intensity of its sweetness. The beans are even, large, and translucent, with a low defect rate; after medium-dark roasting they carry rich roast aromas, and the black coffee they produce is clean, full-bodied, and well suited to anyone who does not like acidic coffee.

Hand-brewing shows the Golden Mandheling at its best. FrontStreet suggests water at 87-88°C, 15 grams of coffee, a 1:15 ratio, and a grind about the texture of coarse sugar, poured in three stages to better express the body and caramel sweetness. Begin with a 30ml bloom that fully wets the grounds and lets them degas, follow with 100ml to wash out the golden foam and lift the bed, and finish with a gentle 95ml center pour to raise the sweetness. The result is a dense, thick body with caramel sweetness and chocolate and nut flavors. Many people who enjoy Mandheling also want to use it on an espresso machine, and for that FrontStreet's Classic Espresso Blend is the most frequently repurchased option: it adds medium-dark Mandheling to the creamy, nutty base of a Brazilian coffee, so butter, roasted chestnut, and caramel stand out, and the Mandheling raises the body while contributing sandalwood, herbal, and spice notes. A small amount of Robusta is added to increase the richness of the crema, which makes latte art or a layered Dirty easy to pour.