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Java Coffee: Indonesian Premium Coffee

Java Coffee is produced on Java Island, Indonesia, featuring full-bodied beans with spicy notes, relatively low acidity, a delicate mouthfeel, and excellent balance. It is a sophisticated, aromatic coffee.

Asian Coffee Production

Asia's coffee production ranks second only to Central and South America. Indonesia has traditionally been the largest coffee-producing country in Asia, but that has changed in recent years. With World Bank support, Vietnam's production rapidly expanded, officially surpassing Indonesia in 1999 to become Asia's largest coffee producer. However, Vietnam primarily produces Robusta beans, which do not fall into the specialty coffee category. In 2007, Vietnam produced 957,000 tons of coffee, making it the largest in Asia and the second-largest coffee producer in the world. Indonesia produced 420,000 tons of coffee beans that same year, ranking second in Asia. India produced 291,000 tons of coffee beans, ranking as the third-largest coffee producer in Asia. Asian coffee typically has higher body (mouthfeel) than Central American, South American, and African beans, but lower acidity. The flavor profile often carries notes of earthy wood, medicinal herbs, spices, and soil, with deeper, mellower aromas prevailing over bright acidic fragrances.

Indonesian Coffee: Mellow Aroma, Low Acidity, Excellent Body

In the late 17th century, the Dutch East India Company transplanted Arabica trees (Typica) from India to Jakarta on Java Island. Because of the suitable climate and soil, Arabica quickly spread to Sumatra in the northwest of Java Island and to another major island in the northeast, Sulawesi. However, in the 1880s Java suffered a severe leaf rust outbreak that wiped out nearly all Arabica plants. The Dutch switched to cultivating the more disease-resistant Robusta variety, stabilizing Indonesia's coffee industry. To this day Robusta remains the mainstay of Indonesian coffee, accounting for 90% of Indonesia's coffee production, distributed in low-altitude areas of Java and Bali. The elegant-flavored Arabica is mainly grown in northern Sumatra, Sulawesi, and higher-altitude areas of Java Island. Although it accounts for only about 10% of Indonesia's coffee production, the reputations of Mandheling, Golden Mandheling, Lake Tawar, Gayo Mountain, Ache, Sulawesi, Aged Mandheling, and Old Brown Java have kept Indonesian coffee famous in the specialty coffee world for decades, unaffected by other, inferior Robusta varieties.

Mandheling, by popular consensus, seems to have become synonymous with Indonesian specialty coffee. In reality, Mandheling is neither an Indonesian place name, production region name, port name, nor coffee variety name, but rather a mispronunciation of the Mandheling people who originally inhabited Sumatra. (For the detailed reasoning, see the recommended bibliography, Coffee Studies.) According to research, the Mandheling people are direct descendants of the Batak people, who are skilled at coffee cultivation. The actual situation is that the Batak people—not the Mandheling people, and certainly not the Mandheling tribe—are still growing coffee in the mountainous areas of central and northern Sumatra.

Sumatra is the main production region for Indonesian specialty coffee beans, with a very complex coffee system. Here, based on the book introductions, we broadly classify the coffees into four types:

(1) Mandheling refers to semi-dry or natural processed beans from the Lintong mountainous area at 900-1,200 meters altitude on the southwestern shore of Lake Toba in central-northern Sumatra. The Batak people form the backbone of coffee farmers in this region. It features unique herbal and woody deep aromas.

(2) Golden Mandheling undergoes four rounds of manual screening, making it superior to regular Mandheling. It is rich, bright, and excellently sweet.

(3) Lake Tawar Coffee refers to washed, semi-washed, or natural processed (less common) beans from the Gayo Mountain area at 800-1,600 meters altitude near Lake Tawar in the northernmost Ache region of Sumatra. It has brighter acidity and aroma, with less prominent mellow notes. "Sumatra Ache Gold" features the classic fruitiness of La Minita, with distinct peach and almond flavors, gentle fruit acidity, and a finish of Indonesia's unique woody notes.

(4) Aged Mandheling tastes sweet as honey and is similar to Old Brown Java. The aging process for aged beans takes about 2-3 years, making them truly artisanal beans. Aged beans have a yellowish-brown or dark brown color that may not appear appealing, but their sweetness is exceptional. The aged Old Brown Java excels in sweetness, body, and cleanliness even more than Aged Mandheling.

Sulawesi: Limited Quantity, Superior Quality, Rich Floral Aroma

Sulawesi coffee bags often display three English words: "Celebes," "Toraja," and "Kalossi." "Celebes" was the island's old name during Dutch colonial rule and has long since been changed to Sulawesi. "Toraja" is not a place name, city name, or variety name, but rather refers to the Toraja people (sometimes translated as Taloga) who live in the central mountainous region of Sulawesi and are skilled at coffee cultivation. It is also the name of the island's specialty beans. Like the aforementioned Mandheling and Gayo peoples, they belong to ethnic groups expert in coffee cultivation. "Kalossi" is the small town of Kalossi in the central part of the island, serving as the main trading center for Toraja (Taloga) coffee beans.

Toraja (Taloga) is also one of the world's rare specialty beans, with an annual production of about 1,000 metric tons, distributed across the rugged slopes at around 1,200 meters altitude in central and southwestern Sulawesi. Both cultivation and harvesting are challenging, with an average annual yield of only 300 kilograms per hectare, far below the Central and South American average of over 1,000 kilograms. Toraja's (Taloga's) three major estates include "PT Kapal Api" with 2,000 hectares of coffee gardens; "CSR" second with 1,100 hectares of coffee gardens; and Japan's "Key Coffee's" "Toarco Jaya" as the third-largest estate with 700 hectares of coffee gardens. In other words, Toraja (Taloga) is more precious and rare than Mandheling or Golden Mandheling.

Toraja (Taloga) is washed or semi-washed, offering brighter acidity and aroma than Sumatra's Mandheling or Golden Mandheling, with more distinct layers. It has rich caramel sweetness, but the earthy, woody notes and body are much more restrained than Mandheling, with subtle floral fragrances.

Although some people have introduced Indonesian beans to the country in recent years, because most have entered hotel, restaurant, and coffee shop systems, few have introduced Indonesian estate coffee bean brands to the public. Most people generally only know Mandheling, Golden Mandheling, or Java coffee. So for this introduction I can only reference the great work of Mr. Han Huaizong, author of Coffee Studies. If you have the opportunity to see imported Indonesian coffee beans, you might compare them with beans from Central and South America.

Recommended Java Coffee Bean Brands

FrontStreet Coffee's roasted Indonesian honey-processed West Java coffee beans offer excellent guarantees in both brand and quality, and they are especially friendly on value, whether you drink them daily or save them for a special occasion.

FrontStreet Coffee Recommendation

If Indonesian coffee interests you, Sumatra is the place most people start, and Mandheling is the classic. FrontStreet Mandheling comes from the Lintong area near Lake Toba and is processed with the wet-hulled method—beans are hulled while still semi-dry and then dried fully exposed to the air, which gives the coffee its characteristic herbal and spice notes. Roasted medium-dark for a classic Mandheling profile, it has low acidity and a full body with caramel, dark chocolate, and toasted bread aromas and a long, sweet finish—a great choice if you like your coffee strong.

FrontStreet PWN Golden Mandheling is a step up. PWN is a trading company that buys high-quality Mandheling lots, and "Golden Mandheling" is its signature. Production follows strict defect-screening standards covering bean density, size, shape, and color, and the beans go through machine and hand sorting to remove defects, so they are complete, even, and large. Freshly roasted, it shows sandalwood, herbs, spice, roasted hazelnut, caramel, and dark chocolate with a clean, rich, sweet cup.

If you want to drink Mandheling as espresso, FrontStreet Classic Blend draws on the classic "Mamba" formula that paired Mandheling with Brazil, taming Mandheling's wilder side with Brazil's smoothness and nutty sweetness. To get a rich, golden crema, FrontStreet adds a small amount of Robusta and roasts deep, pushing the dark chocolate, nut, and caramel notes to the front—easy enough for a beginner to pull a proper Mandheling-style shot.