How do Mandheling and other Asian coffees differ?

Asian coffee generally shows a full body, steady sweetness and restrained aroma and brightness, with notes of dark wood, herbs and spice. The guide covers Indonesian Mandheling, Yunnan arabica such as Baoshan Catimor, and Papua New Guinea estate beans, outlining varieties, processing methods and flavor for each origin.

Yunnan coffee and other Asian lots mostly use wet or semi-wet processing, leaving green beans fairly uniform though darker under the semi-wet method. Indonesia traces its coffee to Dutch planting in 1696 on Java, and leaf rust in 1877 wiped out most arabica trees there, which shaped the region's later varieties.

Asian coffee occupies a unique position in the global coffee landscape. Its flavors are generally known for being full-bodied and steady, with strong, rounded sweetness, but relatively restrained aroma and brightness. From Indonesian Mandheling to Chinese Yunnan Arabica, and to specialty beans from Papua New Guinea, Asian origins rely on their unique climate, soil, and processing methods to produce coffees with distinctive character. This article systematically reviews the varieties, processing methods, flavor characteristics, and representative products of major Asian coffee origins, with a focus on the Indonesian Mandheling series, Yunnan Baoshan Catimor, and Papua New Guinea Bird of Paradise Estate beans recommended by Front Street Coffee, helping coffee lovers gain a comprehensive understanding of the diverse charm of Asian coffee.

Asian Coffee Beans

When coffee lovers think of Asian coffee, the first thing that often comes to mind is its richness and steadiness. The common traits of Asian coffee are a heavy flavor, strong and rounded sweetness, but somewhat plainer aroma and brightness. In terms of green bean processing, Asian origins mostly use wet or semi-wet processing. The green beans usually have a relatively uniform appearance, though beans processed by the semi-wet method tend to be darker in color.

Asian beans and island flavors: fuller body than Central and South American and African beans, with lower acidity. The flavors often carry notes of dark wood, herbs, spices, and earth, with more low-toned, muted aromas than bright acidity. Island beans, by contrast, are relatively light and gentle, showing an elegant tonality.

1. Indonesia

Indonesian coffee is famous for its rich, full-bodied flavor and mouthfeel, with extremely low acidity and a caramel, dark chocolate-like sweetness and lingering finish, which especially fascinates Japanese consumers. Indonesia is a major coffee-producing country in Asia and ranks among the top coffee producers in the world. The origin of Indonesian coffee can be traced back to a little story, and Front Street will tell you about it here!

In 1696, the Dutch introduced coffee beans to Indonesia. After successful trial planting, they focused on Java for large-scale cultivation. However, in 1877, almost all coffee trees in Indonesia were infected with leaf rust. Arabica coffee beans, lacking resistance, were almost completely wiped out, causing heavy losses. After that, Indonesia had to introduce Robusta coffee beans from Africa. Their strong disease resistance helped Indonesia's coffee economy gradually recover. Today, Indonesia is the world's most important producer of Robusta coffee beans. Arabica accounts for only 6%-10% of Indonesia's total coffee, including the well-known Mandheling. Robusta is mainly grown in southern Sumatra, while Arabica is grown in northern Sumatra.

Indonesia's best coffee comes from three regions: Sulawesi, Sumatra, and Java. Among them, Java has the highest production and is famous for Arabica, with bright acidity and clean fruity notes. Today, about 90% of Indonesian coffee is Robusta, often used for commercial-grade coffee.

As Front Street has said, the Arabica coffee plant was first shipped to Indonesia by the Dutch East India Company in the 17th century, when Indonesia was still under Dutch occupation. Their goal in growing coffee was to break the global Arab monopoly on the coffee trade.

Initially, the Dutch colonial government planted coffee in Bogor, southern Sukabumi, and near Batavia (Jakarta). In addition to parts of Sulawesi and Sumatra, coffee plantations were later established in East Java, West Java, and Central Java. To develop plantations, large areas of forest were cleared for cultivation. The growth of coffee plantations drove the development of a great deal of infrastructure in Central Java throughout the 19th century. Many railways and roads were built to transport beans from the island to different ports for export.

As far as Front Street knows, the reason for Indonesia's high coffee production lies in its typical tropical rainforest climate, with an average annual temperature of 25-27°C, no four seasons, and annual rainfall of 1600-2200mm. Indonesia lies in a volcanic belt, with fertile soil rich in minerals, which is favorable for coffee growth. The altitude ranges from 900-2100 meters, with major growing areas concentrated around 1200 meters.

Indonesian coffee beans mainly have two harvest seasons. The main harvest is around September-October, and the secondary harvest is in May-June. This year, Indonesia's coffee bean exports have increased greatly compared with last year. Analysts believe that last year's high coffee prices in Indonesia led to reduced exports, while increased production in the current season has driven exports up. The combination of one decrease and one increase has contributed to the sharp export growth.

There are mainly three types of Indonesian coffee beans: Arabica, Robusta, and Liberica. In detailed classification, there are more than 20 main varieties. Common ones include Caturra, Catimor, Timor, Typica, S288, S795, and Sidikalang. At present, Indonesia's coffee planting area exceeds 1 million hectares, accounting for 24% of total cultivated land. The average coffee planting area is 1.7 hectares, with about 2.7 billion coffee trees, of which 66% are grown on plantations using modern cultivation methods, while the rest are grown on traditionally managed small farms.

More than 95% of Indonesian coffee beans are produced by smallholders. Coffee estates are mainly located in East Java and Central Java. Most production is organic, and 19 farmer cooperatives and exporters have obtained organic coffee certification for the international market.

Indonesia's coffee processing method is also distinctive. According to Front Street, Indonesia's coffee processing method is called giling basah, known elsewhere in the world as the semi-washed/wet-hulled process. After the coffee is picked, it is first depulped and briefly dried. Unlike most processes, which dry coffee to a moisture content of 11% or 12%, the semi-washed process dries coffee to 30%-35% moisture content, then hulls it to remove the parchment and expose the green coffee beans. These naked beans are then dried again until they can be stored without rotting. Semi-washed coffee tends to have much lower acidity and fuller body than most coffees.

Therefore, Indonesian coffee often has a deep, bold flavor with prominent earthy notes. The flavors brought by semi-washed processing include earth, mustiness, spices, wood, tobacco, and leather. They usually have a long finish that feels like unsweetened dark chocolate. Sumatra is today's most popular Indonesian origin and is known for dark roasting. Sumatra produces Mandheling and Ankola, two of the world's most famous and highest-quality coffees, often with complex smoky or roasted flavors.

Among them, Indonesian Mandheling is especially worth mentioning!

Mandheling was originally the name of an Indonesian tribe. After colonizing Indonesia, Japanese soldiers returned to Japan and could not forget the delicious local coffee. Through trade connections, they asked locals to help collect high-quality coffee beans, including this Mandheling. The Japanese loved these beans very much. Because the commercial source could not be disclosed, the local person casually said "Mandheling," and by accident Mandheling became the name of this coffee bean. This local person was in fact the owner of the Indonesian PWN company (Pwani Coffee Company), which will be mentioned below. This company was the first enterprise to export Golden Mandheling coffee beans to Japan. Front Street Coffee (FrontStreet Coffee) has used Front Street PWN Golden Mandheling for many years. PWN also changed from 60kg bags at the beginning to 30kg bags, and the origin was also changed from Lintong to Mount GAYO.

According to Front Street, Mandheling's processing method is also highly local. It mostly uses Sumatra's unique wet-hulling method. The local weather is rainy with constant typhoons, making it impossible to meet the good weather conditions required for natural sun-drying, and poor economic conditions also make it difficult to afford the more expensive washed method, so the highly local wet-hulling method developed. Today, Indonesia's coffee development is no longer as poor as it once was. Many estates and companies can afford to use the washed method, but why have they not abandoned wet-hulling? Front Street Coffee (FrontStreet Coffee) believes that wet-hulling made Mandheling known to the world. At the mention of Mandheling, one thinks of wet-hulling. They have already become mutually complementary. The specific steps of wet-hulling are divided into two stages: In the first stage, a wooden depulper is used to remove the skin and pulp, followed by 3 hours of fermentation and drying, bringing the moisture content down to a semi-dry, semi-wet 30-50%. In the second stage, the mucilage and parchment layer are removed, and drying continues in the later stage. The drying process takes 2-4 days, and the moisture content drops to 12-13%.

In addition to the regular wet-hulled method, there is also an aged wet-hulled method. Coffee beans are first processed by the ordinary wet-hulled method, then sealed and stored in a warehouse for 2~3 years. The warehouse must be cool and ventilated, and the beans must be turned regularly to prevent mold and spoilage. During this period, the acidity of the coffee beans gradually weakens and turns into sugar, and the color also darkens, mostly to yellowish brown or dark brown. The Mandheling coffee beans using this processing method on the Front Street Coffee (FrontStreet Coffee) bean list are called Aged Mandheling coffee beans.

Wet-hulling created Mandheling's special flavor. It can be said that Mandheling and wet-hulling are closely bound together. But today's coffee market is no longer satisfied with staying unchanged. Even if wet-hulling is Mandheling's characteristic, there will still be attempts with other processing methods. Front Street will also mention them next.

Below are all the Indonesian coffee varieties currently offered by Front Street

Front Street Coffee (FrontStreet Coffee) — Front Street PWN Golden Mandheling Coffee Beans

Country: Indonesia Region: Sumatra Altitude: 1100-1600m Variety: Typica, 19 screen Processing Method: Wet-hulled Flavor: Nuts, spices, herbs, licorice, chocolate, caramel; clean and soft flavor;

Golden Mandheling comes from Lake Tawar in the Gayo Mountains of northwestern Sumatra. After the Japanese discovered Mandheling, they remained very devoted to these beans. In cooperation with local green bean merchants, they established a strict screening system. After processing, the green beans undergo density and color sorting, and then are manually hand-picked four times, ultimately presenting Mandheling with uniform color and uniform bean shape. It is said that when processing the green beans, Mandheling shines with a golden luster under sunlight, hence the name Golden Mandheling.

But the company that registered Golden Mandheling as a trademark was not a Japanese company, but the local Indonesian company that cooperated with Japanese companies in exporting Mandheling in the early days — PWN company (Pwani Coffee Company). The Japanese company registered "Gold Top Mandheling." Front Street Coffee (FrontStreet Coffee) believes that the flavor performance of the two is not very different, but because of different brands and different merchant marketing strategies, changes in public opinion are also possible. Therefore, which of the two Golden Mandheling coffees is better is a matter of opinion.

The specification of Golden Mandheling is 18 screen and above, with fewer than 3 defective beans (in a 300g green bean sample), belonging to the highest grade G1. The color is darker green, and the shape is neat flat beans. After strict screening, Front Street Coffee (FrontStreet Coffee) found that Golden Mandheling not only no longer has the earthy, miscellaneous flavors of ordinary Mandheling, but also drinks cleaner and more translucent, with a stronger sweetness and aroma.

Front Street Tiger Mandheling

Country: Indonesia Region: Sumatra Altitude: 1500m Variety: Caturra, Typica, Sidikalong Processing Method: Wet-hulled Flavor: Cream, dark chocolate, nuts, balanced taste

Tiger Mandheling grows in Indonesia, with main producing areas located on the three islands of Sumatra, Java, and Sulawesi. Tiger Mandheling is produced at Tiger Estate, so it is also called "Mandheling Tiger" or "Sumatra Tiger Mandheling." Northern Sumatra has a relatively high altitude. Aceh Province, where Lake Tawar is located, and North Sumatra, where Lake Toba sits, are the main Arabica producing areas.

Lake Tawar is located in the Gayo Mountains north of Aceh Province in Sumatra. Indonesia straddles both sides of the equator, and its hot, humid tropical rainforest climate brings abundant rainfall, while fertile volcanic soil provides rich nutrients for coffee. However, because it is remote and inconvenient to transport, coffee was not grown there until 1924, mostly using traditional shade-growing organic cultivation without pesticides.

Front Street has learned that this is because Indonesia's annual humidity is between 70-90%, annual rainfall can even reach 2,000mm, and typhoons are constant. Farmers pursue faster economic returns, so they use the wet-hulled method. In the ordinary washed process, beans are sun-dried with parchment for 2-3 days. When the moisture content reaches 20-24%, the parchment is removed, and the beans are easily crushed and form small gaps. This is what is commonly called horse hoof or sheep hoof beans. The defect rate is relatively high, which creates a full-bodied, intense, and highly distinctive flavor.

Front Street Aged Mandheling

Country: Indonesia Region: Sumatra Altitude: 1500m Variety: Caturra, Catuai Processing Method: Wet-hulled Flavor: Ripe pu'er, caramel, herbs, chocolate, relatively low acidity.

Front Street believes that when coffee fans hear "aged coffee beans," they may literally understand it as green coffee beans that have been stored for a long time. Of course, that is not right, because green coffee beans will also spoil after long storage, changing from fresh green to white, then to yellow, becoming tasteless or even bug-infested. Therefore, this Aged Mandheling, like aged liquor, must undergo proper processing and long-term storage before it can be called true [aged coffee].

Front Street Mandheling (Lintong Mandheling)

Country: Indonesia Region: Sumatra (Lintong) Altitude: 1100-1600m Variety: Typica, Caturra Processing Method: Wet-hulled Flavor: Baked toast, nuts, caramel, pine wood, herbs

Lintong Mandheling is produced in the Lintong mountain area of north-central Sumatra, near Lake Toba. Lintong Mandheling is the regular version of Mandheling. Lintong Mandheling also uses the regular wet-hulled method, creating its characteristics of low acidity and high body. But what happens with the wet-hulled method is that, because the semi-hard, semi-soft wet green beans are easily crushed when removing the mucilage and parchment layer, the beans are damaged and split into a sheep-hoof shape, commonly known as sheep hoof beans. This is not a defective bean, and can be said to be a very notable characteristic of Mandheling.

But according to Front Street, Lintong Mandheling does not put much effort into screening. The lack of refinement in processing can easily lead to unstable output, but it does not diminish people's love for the full-bodied flavor of Lintong Mandheling.

Front Street Sun-Dried Mandheling

Country: Indonesia Region: Sumatra (Lake Toba) Altitude: 1000-1700m Variety: Bourbon, Typica Processing Method: Natural processing Flavor: Melon, fermented aroma, mango, tropical fruit, peach

Usually "Mandheling" is mostly "wet-hulled," a processing method unique in the world. By contrast, "sun-dried Mandheling" is very rare.

Sun-dried coffee usually has a boozy note, so Front Street describes African natural coffee as like "red wine," Latin American natural coffee as like "whisky," and Sumatran natural coffee as like "aged sorghum," very full-bodied and full of passionate tropical fruit flavors, yet rare in being clean and delicate. Front Street Coffee (FrontStreet Coffee) believes that tasting sun-dried Mandheling is a very unforgettable taste experience!

There are five types of Indonesian Mandheling above, so Front Street also hand-brewed these five Mandheling coffees for tasting and comparison. Below are the flavors we obtained, which coffee fans can use for reference:

Golden Mandheling: varied layers, full-bodied and clean, highly balanced, rich nut and caramel aroma, with chocolate notes, long finish. Lintong Mandheling: herbal medicinal notes on entry, dark chocolate, caramel, sweet finish.

Tiger Mandheling: pine wood and spice aromas, relatively balanced mouthfeel, with obvious cream, dark chocolate, and nut flavors.

Aged Mandheling: woody, malt, and caramel aromas rush forth. On the palate, it has less of the wildness of traditional Mandheling and more fullness and delicacy, with a sense of maturity and steadiness. Acidity is relatively low, and on entry there are flavors of ripe pu'er, caramel, herbs, and chocolate, with abundant sweetness. Sun-Dried Mandheling: tropical fruit, fermented notes, moderate acidity, smooth mouthfeel, obvious sweetness.

Front Street West Java Aromanis

Country: Indonesia Region: West Java (Aromanis Estate) Altitude: 1400-1600m Variety: Caturra, Catuai Processing Method: Natural honey processing Flavor: Mango, red wine, peach juice, strong fruity aroma, with plum and jackfruit flavors, clean and sweet finish.

Aromanis is a traditional Indonesian sweet snack made from the basic ingredients of flour and sugar. Here, Aromanis is used to name this coffee, indicating that this coffee bean has a marshmallow-like mouthfeel.

Front Street believes everyone is very familiar with Indonesian coffee. Needless to say, Indonesian Mandheling is very famous, and everyone has probably had Mandheling. But have you tried other Indonesian coffees? Front Street has a honey-processed coffee from West Java, Indonesia. Although it is not as famous as Mandheling, this coffee's feature is the honey processing that is rarely used in Indonesia.

Natural + honey processing. After about 1 month of sun-drying, it undergoes washing and other processing, and then the beans must be stored for about half a month before packaging. The sole purpose of this entire complex, high-risk process is to create a more complex and fuller flavor profile, expressing the wonderful experience brought by this bean's complex lineage.

Front Street Kopi Luwak

Country: Indonesia Region: Sumatra, Java Altitude: 1000-1700m Variety: Caturra, Catuai Processing Method: In-body fermentation Flavor: Herbs, nuts, dark chocolate, fermented taste

Kopi Luwak. Kopi (Indonesian for coffee), Luwak is what Indonesians call an arboreal wild animal known as the "civet."

Kopi Luwak is produced in Indonesia and is one of the world's most expensive coffees. Indonesia grows large amounts of coffee crops. Kopi Luwak exists because Indonesia has a wild animal called the civet, which is omnivorous, has a pointed muzzle and dark gray fur, and likes to eat fresh coffee beans most. The coffee beans undergo fermentation and digestion in its body, and are finally excreted as civet feces. The feces are coffee beans one by one, also making it the most expensive feces in the world. Because the quantity is scarce, the price is very expensive. Civets are distributed in Indochina, India (northeast), Bangladesh, Bhutan, Sikkim, Nepal, and Kashmir, but only the Sumatran civet, namely the Indonesian civet, can produce Kopi Luwak.

In-body fermentation is also the most unique coffee processing method. Front Street suggests that interested coffee fans give it a try.

2. Yunnan

According to Front Street, large-scale coffee planting in Yunnan began in the mid-1950s, once reaching 4,000 hectares. By the end of 1997, the province's coffee planting area had reached 7,800 hectares. At present, the province's planting area accounts for 70% of the country's total, and output accounts for 83% of the country's total. Whether viewed from planting area or coffee bean output, Yunnan coffee has established a dominant position in China.

The history of coffee cultivation in Yunnan can be traced back to 1892. A French missionary brought coffee seeds into Yunnan from abroad and successfully planted them in a valley in Binchuan County. The plants propagated from this batch of coffee seeds still have more than 30 trees flowering and bearing fruit in Binchuan County today.

The main product variety is Arabica, namely small-bean coffee, commonly known in China as Yunnan small-bean coffee.

Yunnan's high-quality geographical and climatic conditions provide good conditions for coffee growth. Its natural conditions are very similar to those of Colombia, namely low latitude, high altitude, and large temperature differences between day and night. Therefore, according to Front Street's cupping analysis, the small-bean coffee produced there is of the mellow-aroma type, with quality and mouthfeel similar to Colombian coffee.

Yunnan's suitable coffee-growing areas are distributed in Simao, Banna, Wenshan, Baoshan, Dehong, and other areas in southern and southwestern Yunnan.

Front Street Yunnan Baoshan Sun-Dried Catimor

Country: China Region: Yunnan (Baoshan) Altitude: 1450-1550m Variety: Catimor Processing Method: Red Cherry Natural processing Flavor: Caramel, dried fruit, cocoa, dark chocolate, herbs, wood

As one of the three major producing areas of Yunnan small-bean coffee, Baoshan is a pioneer in China's small-bean coffee cultivation and processing, with a long planting history and rich cultivation experience dating back to the mid-1950s. According to research, the oldest coffee trees are already more than 60 years old. Baoshan City in Yunnan began large-scale coffee planting in 1952, with a history of nearly 60 years. Thanks to the unique natural conditions of the Nujiang River basin and Kujiang River basin within its territory and years of accumulated cultivation techniques, and with the careful cultivation of broad farming households and technicians, Baoshan coffee enjoys a relatively high reputation in the international market for its unique excellent quality.

Most of what is grown in Yunnan now is Catimor. This variety is a cross between Caturra, a branch of the Bourbon line within Arabica, and the Robusta line. The reason for planting it is that Catimor has Robusta genes, so its disease resistance is stronger than that of single old varieties, and its yield is also good. Compared with delicate old varieties, farmers naturally prefer to grow Catimor, so Yunnan has now set off a wave of Catimor.

Front Street's Catimor is red cherry natural processed. Natural processing itself can improve the sweetness of coffee beans. By harvesting and selecting fully ripe fruit, the mucilage also has a higher sugar content. Red cherry natural processing not only means picking only ripe red cherries during the harvest period, placing them one by one into baskets, but also requires the harvested fruit to be uniform in size, similar in ripeness, and free of impurities. During processing, defective beans and unripe or overripe fruit must first be manually screened out. Then the red coffee cherries are spread flat on raised wooden frames or entire drying racks for sun-drying, avoiding placing the beans on the ground where they may pick up off-flavors.

Therefore, red cherry natural processed coffee beans have higher sweetness than those produced by common natural processing, and the mouthfeel is also fuller and more solid.

Front Street Yunnan Small Bean

Country: China Region: Yunnan Altitude: 1450-1550m Variety: Catimor Processing Method: Washed processing Flavor: Citrus, fermented fruity aroma, cocoa, nuts, herbs

Yunnan small-bean coffee refers to small-bean coffee cultivated in the Yunnan region. Coffee is an evergreen small tree of the Rubiaceae family, native to Africa. At present, the main beverage plants cultivated are small-bean coffee (Coffea arabica) (also called small-fruit coffee) and medium-bean coffee (C. canephora) (also called medium-fruit coffee). Small-bean coffee cultivated in Yunnan, China, traditionally refers specifically to a mixed population of the Bourbon variety and the Typica variety.

Small-bean coffee is the most widely planted species in the Coffea genus. Because of its strong cold resistance and tolerance of short-term low temperatures, it can grow at altitudes of 2,100 meters in tropical regions, but it is not drought-tolerant; its branches are fragile and not resistant to strong winds; its disease resistance is relatively weak; and the fruit easily falls after ripening. After processing, the coffee has a mellow aroma and a relatively low caffeine content.

Front Street Huaguoshan

Country: China Region: Yunnan Altitude: 1200m Variety: Typica Processing Method: Washed processing Flavor: Melon and fruity aroma, melon, brown sugar, plum acidity, black tea note

The difference between Front Street's Front Street 2013 Typica coffee beans and Yunnan small bean is that Huaguoshan is the Typica variety, while Yunnan small bean is Catimor. In fact, both beans can be called small-bean coffee, but because Typica's floral and fruity acidity is softer and richer, the name Huaguoshan was specially chosen to distinguish the two varieties.

3. Papua New Guinea

Papua New Guinea can be considered an exception among Indonesian coffees. Coffee estates are numerous, large and small. Most small estates produce washed organic beans with intense flavor but no earthy taste. These small estates also produce a small amount of natural beans. Compared with washed beans, these natural beans have more varied and delicate flavors; large-estate coffee has a relatively clean and delicate mouthfeel, but some people complain that it lacks a bit of individuality. Basically, Papua New Guinea coffee has a lighter body than Java beans, somewhat similar to good Central American beans. Most coffee trees there come from the Jamaican Arabica Typica variety, mixed with Tanzanian Typica Arusha-type beans.

Front Street Papua New Guinea Little Blue Mountain (Bird of Paradise)

Country: Papua New Guinea Region: Sigri Estate Altitude: 1500m Variety: Caturra, Catuai Processing Method: Washed processing Flavor: Cream, nuts, chocolate, soft fruity acidity

According to Front Street, Sigri Estate was established in 1950 and has now been around for more than 60 years, making it a pioneer in the local coffee industry. Bird of Paradise Estate is located in the Wahgi Valley of Western Highlands Province, in a mountainous area about 1,500 meters above sea level, with mineral-rich volcanic soil, a cool climate, fertile soil, and abundant rainfall.

Bird of Paradise Estate also places great emphasis on ecological protection. To protect soil and water sources, it refuses pesticides and insecticides, and cares for the ecology and nearby birds. For many years, Bird of Paradise Estate has adhered to high-standard cultivation and processing systems. During the harvest season from April to September each year, only fully ripe red coffee cherries are hand-picked, bringing the acidity and sweetness in the coffee berries into perfect balance.

At Bird of Paradise Estate, cupping is conducted every day to ensure that the estate provides customers with consistently top-quality coffee. Thus Bird of Paradise Estate has become a classic among the world's specialty coffees.

The above are all the Asian coffee varieties offered by Front Street so far. We believe coffee lovers now have a certain understanding of Asian coffee, and can therefore better choose flavor coffees that suit them.

The above content is compiled by CoffeeHunters, a coffee news website.