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Flavor Map of Asian Coffee Origins: Planting Characteristics of Yunnan, Indonesia, and Papua New Guinea, and an Analysis of Front Street Coffee's Selected Beans

December 8, 2020
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Asian coffee has always stood out in the global landscape with its mellow and steady style, full and rounded sweetness, and relatively restrained aroma and brightness. This article focuses on three representative Asian origins—Yunnan in China, Indonesia, and Papua New Guinea—systematically reviewing the growing conditions, variety characteristics, and processing methods of each region, and introducing the corresponding selected beans from Front Street one by one. From Catimor in the dry-hot valley of Baoshan, Yunnan, to wet-hulled Mandheling from Sumatra, and further to the island flavors of Papua New Guinea, readers can build a clear understanding of the overall character of Asian coffee, gaining practical guidance whether for daily drinking or bean selection.

For professional coffee knowledge exchange and more coffee bean information, please follow Coffee Workshop (WeChat public account: cafe_style)

When it comes to Asian coffee, most people's immediate impression is mellow and steady. This origin as a whole shows solid flavor, high sweetness, and roundness, while aroma expression and acidity brightness are relatively gentler. Below, let's talk one by one about Front Street's Asian coffee series.

I. Yunnan

Catimor has been widely promoted and planted in Dehong, Baoshan, Pu'er, and other parts of Yunnan Province, and is also actively being expanded in Panzhihua, Sichuan, as well as Myanmar. Yunnan's coffee-growing areas are mostly above 1,200 meters in altitude, with abundant rainfall and loose, fertile soil. The dry-hot valley climate around Baoshan is especially favorable for coffee growth. Yunnan lies between 15 degrees north latitude and the Tropic of Cancer; high-altitude areas have high temperatures year-round, significant day-night temperature differences, moderate rainfall, ample sunshine, and mineral-rich red volcanic ash soil. Together, these conditions shape the unique character of Yunnan Arabica coffee. The coffee produced locally is of good quality, with a mellow aroma; although the concentration is high, it is not bitter, the fragrance is prominent without being harsh, and it carries a hint of fruitiness.

The potential of Chinese Yunnan coffee should not be underestimated. Baoshan has now developed into one of China's most important coffee seed bases and main producing areas. Yunnan's three coffee beans each have their own strengths.

1. Front Street Natural Catimor Coffee

Variety: Catimor

Processing method: Red cherry natural process

Altitude: 1,450 m–1,550 m

Flavor: Nuts, chocolate, spices

This bean takes the natural route, and the specific process is as follows:

1. Pick ripe coffee cherries.

2. First carry out preliminary screening to remove impurities and defective beans.

3. Floating bean screening: pour the coffee cherries into a water tank; plump, ripe cherries will sink, while unripe or damaged ones will float.

4. Sun drying: scoop out the sunken ripe cherries, spread them on the drying yard to dry in the sun, reducing the moisture content from 70% to about 10–12%. During this period, they need to be turned several times a day to ensure even drying, and at night they must be covered to prevent moisture.

5. Hulling: after about two to four weeks of sun exposure, the outer layer of the coffee seed has become dry and hard; at this point, use a huller to remove the shell and the process is complete.

The advantage of this processing method is that the process is simple, requires little in the way of tools and equipment, and, apart from the floating bean screening step, basically consumes no water, so the cost is relatively low. Therefore, it is widely adopted in areas with scarce water resources or less developed economies.

2. Front Street Yunnan Arabica Coffee

Variety: Catimor

Processing method: Washed

Flavor: Nutty in the dry aroma; chocolate, nuts, and cream on the palate, with brown sugar sweetness; overall balanced.

Yunnan Catimor mainly uses the washed method. After harvest, the cherries first go through a pulper to separate most of the fruit pulp, then the parchment beans are introduced into a clean water tank and soaked to ferment so as to thoroughly remove the remaining mucilage layer. During washing, unripe beans and defective beans are selected out by buoyancy. Therefore, washed beans are not as likely to carry off-flavors as natural beans, but instead show clear fruit acidity, greater complexity, and a cleaner texture. Front Street chose this Yunnan coffee precisely because it has both the traditional mellow flavor and does not have as strong an herbal note as Mandheling.

3. Front Street Huaguoshan Coffee

Variety: Typica

Processing method: Washed

Flavor: The dry aroma has a faint citrus acidity and nutty aroma; on the palate there are plum and citrus acidity with nutty flavors, accompanied by melon-fruit notes and brown sugar sweetness, with a black tea-like finish. The overall flavor layers are relatively rich.

II. Indonesia

There are many names for Mandheling coffee on the market, but in fact Mandheling was originally the name of an Indonesian tribe. Coffee beans widely grown by Indonesian farmers on Sumatra and other small islands are almost all collectively called Mandheling, and different regions and different green bean merchants use various names to distinguish them.

Mandheling green beans are usually processed by the wet-hulled method, which gives them a wet-hulled character. It is generally believed that the wet-hulled method gives the coffee earthy, smoky, and chocolate notes; the acidity is described as "low acidity," and the body is mellow but somewhat dull.

The wet-hulled method, also called wet shelling, is a traditional Indonesian coffee processing method. Coffee processed this way is often mellow and intense, with a distinct personality. This Front Street Mandheling has herbal notes on the palate, obvious dark chocolate and caramel notes, and a sweet aftertaste.

Next, let's briefly compare the flavor differences among several common Front Street Mandheling coffees.

1. Front Street Mandheling (Lintong) Coffee

Region: Lintong

Variety: Typica, Caturra, Catimor

Altitude: 1,100–1,600 m

Flavor: Herbal medicinal notes, dark chocolate, and caramel on the palate, with a sweet aftertaste.

2. Front Street Tiger Mandheling Coffee

Because it is produced at the Sumatra Tiger Estate in Indonesia, it is also called "Mandheling Tiger" and "Sumatra Tiger Mandheling." The main varieties are Caturra and Typica. The taste is balanced, with obvious cream, dark chocolate, caramel, and nutty flavors, and more Chinese herbal aroma than ordinary Mandheling.

3. Front Street Aged Mandheling Coffee

The basic flavors are ripe pu'er, caramel, herbs, and chocolate, with relatively low acidity.

It uses a very special processing method called the "aged bean process." Aged coffee beans are not simply beans that have been left for a long time; like aged liquor, the green beans must undergo proper processing and long-term storage before they can be called true aged coffee. Therefore, the storage environment needs to be cool and ventilated. After aging, coffee beans show changes such as reduced acidity, altered color, and thickened bean structure. After the passage of time, aged Mandheling has worn away Mandheling's acidity, improved in purity, and become rounder in the mouth under medium-dark roasting.

4. Front Street Golden Mandheling Coffee

Its flavor differs from the several above: layered and changeable, clean and balanced, with a lasting caramel sweetness in the finish.

Front Street Golden Mandheling uses selected Golden Mandheling from the Lintong region. It is a rare specialty coffee from an Asian origin and a representative of Asia's ability to rank among the world's specialty coffees. Its special quality lies in spice, caramel, and mellow richness, with a rich sensation that remains constant over time.

Region: Aceh, North Sumatra

Altitude: 1,100–1,600 m

Flavor: Baked toast, nuts, pine, caramel, herbs

5. Front Street West Java Amani Coffee

West Java Province is located in the western section of Java Island, bordered by Java Island to the north and close to offshore islands; it has a tropical rainforest climate, hot and humid all year round. The northern coastal plains have the highest temperatures, while the mountainous areas are much cooler. High humidity often creates an enervating climate. Local plantations are basically all above 1,400 meters in altitude, and together with typical volcanic soil, this creates a unique flavor.

"Amani" is actually a traditional Indonesian dessert made with flour and sugar as basic ingredients. Using it to name this coffee indicates that this bean has a marshmallow-like texture, just like that dessert.

The main feature of this bean is its complex sweetness and fruity aroma, with a very obvious fruit profile. It uses a unique honey processing method, bringing a red wine character.

6. Front Street Kopi Luwak Coffee

In Indonesian, "Kopi" means coffee, and "Luwak" is what locals commonly call the civet. Around the 18th century during the Indonesian colonial period, the Dutch established many coffee plantations locally. This rainforest was originally the civet's home, and civets that lost their habitat quickly learned to look for sweet coffee cherries in the coffee plantations to satisfy their hunger. After civets eat coffee beans, fermentation is completed in their stomachs, breaking down the coffee beans' proteins, producing large amounts of free amino acids, and reducing the coffee's bitterness. Because the coffee beans cannot be digested, the civet excretes them, and after cleaning and roasting they become civet coffee. Therefore, this coffee has herbal, nutty, dark chocolate, and rich fermented flavors.

7. Front Street Natural Mandheling Coffee

Variety: Bourbon, Typica

Estate: Wahana Estate

Processing method: Natural process

Altitude: 1,000–1,700 m

Flavor: Melon, fermented wine aroma, mango, tropical fruit, peach

This bean does not use Indonesia's distinctive wet-hulled method, but instead uses the more difficult natural process. The natural process first requires manually sorting out defective beans as well as underripe or overripe fruit. After that, the coffee cherries are evenly spread on the drying yard and turned several times a day. Drying usually lasts 2–3 weeks, depending on the local climate, and Indonesia's humid, rainy climate can make this period longer. When the internal moisture content of the coffee beans drops to 11–13%, the natural process step is complete. After drying, the outer shell of the fruit has become dry and hard; simply use a huller to remove the shell.

III. Papua New Guinea

Most people probably know Papua New Guinea because of a coffee bean called "Bird of Paradise." Most of the country's territory is on the island of New Guinea, divided by a boundary line into east and west halves: the west belongs to Indonesia, and the east belongs to Papua New Guinea. East of Indonesia has a standard island-type climate; located between the equator and 10 degrees south latitude, it has tropical rainforest volcanic rock and highland terrain, with altitudes between 1,200 and 2,500 meters, making it a paradise for growing coffee.

1. Front Street Little Blue Mountain Coffee

Because the coffee varieties differ from those of Indonesia, the altitude is also higher than Sumatra, and washed processing is used, the regional flavor of Papua New Guinea coffee is completely different from the spice, herbal, and low-toned feeling of Indonesian beans; instead, it has brightness, sweet acidity, and floral and fruity aromas, and is closer to South American flavors. Front Street Coffee believes it is called Little Blue Mountain because Papua New Guinea also has the characteristics of an island-type climate, high altitude, and volcanic soil, but the flavor experience is not the same. Jamaica Blue Mountain is a mellow coffee flavor, while Papua New Guinea coffee is mellow with a touch of fruit acidity.

The main flavors are rich nutty and cocoa notes, with a slight berry sweetness. The palate is rich and balanced, with sweetness and soft acidity.

For more specialty coffee beans, please add the private WeChat of Front Street Coffee: kaixinguoguo0925.

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

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