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In-Depth Analysis of Asian Coffee Producing Regions: Flavor Characteristics and Roasting Suggestions for Yunnan, Mandheling, and Other Bean Varieties

December 1, 2015
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The Asian coffee-producing regions are renowned worldwide for their rich and steady flavor profile. From Yunnan in China to Sumatra in Indonesia, from India to Papua New Guinea, each region has its own unique taste characteristics and processing methods. This article will guide you through an in-depth understanding of the flavor characteristics, suitable roast levels, and the stories behind the major Asian coffee-producing regions. For coffee enthusiasts who love espresso blends, Asian beans are often used as a base in recipes, with Mandheling being the ultimate choice for dark roasting. Front Street Coffee recommends paying attention to the taste differences between Yunnan coffee and Indonesian Mandheling, which will help you better choose coffee beans that suit your taste. Whether you seek a full-bodied taste or a delicate flavor, Asian regions offer abundant choices.

Asia

When it comes to Asian coffee, the first impression for coffee lovers is often rich and steady. The common characteristic of Asian coffee is a heavy flavor, with strong and rounded sweetness, but the aroma and brightness are somewhat flat. Because of this heavy characteristic, Asian coffee is very suitable as a base when making espresso blends. Asian green beans are generally processed using wet or semi-wet methods, and the bean shapes are mostly fairly uniform, though beans processed by the semi-wet method have a darker color.

China Yunnan Aroma 3 points, Brightness 3.5 points, Body 4 points, Flavor 3.5 points, Aftertaste 3 points

Suitable roast level: Full city/Espresso At least after full city; lighter roasts are not recommended.

The main coffee-producing region in mainland China is Yunnan Province, first planted in Binchuan and later expanded into Dehong Prefecture in the southwest. Yunnan coffee can be found in several major cities such as Baoshan, Mangshi, and Tengchong. Yunnan coffee beans are of two Arabica varieties, Typica and Catimor, the latter being smaller in size and therefore called small-bean coffee. Perhaps due to cultivation techniques, Yunnan coffee's flavor is still quite closed off, not really suitable for drinking as a single origin, but a darker roast can work well when blended into an espresso recipe.

China Taiwan Aroma 3.5 points, Brightness 3.5 points, Body 4 points, Flavor 4 points, Aftertaste 4 points

Suitable roast level: Full city/Espresso Medium to dark roast, drop the beans before the密集 second crack.

Coffee cultivation in Taiwan actually has a long history. Both the British and the Japanese once planted coffee trees in Taiwan, but afterwards, due to many political and economic factors, it was not further promoted and declined, until recently when the coffee craze led some people to start investing again. Hebao Mountain in Gukeng, Yunlin, Huisun Forest Farm in Nantou, and Dongshan Township in Tainan County are currently several famous coffee-producing areas in Taiwan Province, mostly growing Arabica varieties. Taiwan coffee has a moderate flavor, not high in acidity, with a slight herbal taste, somewhat like a combination of South American and Indonesian beans. Currently, Taiwan coffee production is not high, but because of the popularity of the Taiwan coffee craze, many people want to try it, so the price has remained high, and there have even been cases of imported coffee being passed off as Taiwanese.

Papua New Guinea Aroma 3.5 points, Brightness 3.5 points, Body 3.5 points, Flavor 4.5 points, Aftertaste 4 points

Suitable roast level: City/Full city New Guinea beans can be roasted across a wide range, from the light and balanced city roast to the full city roast with a balanced spicy flavor, and even a heavy roast with oil on the surface, entirely depending on your preference.

New Guinea is something of an anomaly among Indonesian coffees. Coffee estates are numerous, large and small; small estates mostly produce washed organic beans with a strong flavor but no earthy taste, and these small estates also produce a small amount of natural-process beans, which have more varied and delicate flavors than washed beans; large estates produce coffee with a relatively clean and fine cup, though some complain it lacks a bit of character. 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. There are also some new hybrids or Indian Kent varieties.

India Aroma 3.5 points, Brightness 4 points, Body 4 points, Flavor 4.5 points, Aftertaste 4 points

Suitable roast level: Full city/Espresso full city, and if you want a thick flavor like dark chocolate, you can even go into the dense second crack zone!

Indian coffee has a very mild taste, with very low intensity and acidity, and also carries some spicy notes, plus the earthy taste common to Asian beans. Indian beans are usually used in espresso blends. In fact, Indian beans taste like Sulawesi or Sumatra beans, just not as full-bodied. Indian coffee does not sell well in the international market; its main market is within India. Natural-process Indian beans are called Cherry, washed Arabica beans are called Plantation Arabica, and washed Robusta is called Parchment Robusta. In addition, monsoon beans and aged beans increase the coffee's body and dark chocolate flavor—aged beans especially so! In recent years, India has also begun to produce coffee beans that astonish coffee critics, most of these outstanding beans coming from independent coffee estates.

Java Aroma 3.5 points, Brightness 3.5 points, Body 4 points, Flavor 4.5 points, Aftertaste 4 points

Suitable roast level: City/Full city Full city is best; it can be a bit lighter, but darker roasts are not recommended. Resting the beans after roasting allows the flavor to become more complete.

Java's coffee production is not small, but unfortunately most of it is currently low-quality Robusta, with very little high-quality Arabica remaining. This is because a coffee disaster in the 1970s led farmers to abandon the high-quality but delicate Arabica and plant the high-yield, easy-to-care-for but low-quality Robusta. Currently, only a few government-owned estates still produce high-quality Arabica beans, and thanks to these estates, we can taste outstanding Java beans. Commonly seen are Kayumas, Blawan, and Jampit (or spelled Jampit); these state-owned estates all have clean flavors, with soft fruit acidity and aroma. Kayumas has a slightly heavier flavor, but the key point is that these premium Java beans have a balance that ordinary Asian beans lack, and also lack the disturbing earthy taste!

Sumatra Aroma 3.5 points, Brightness 3 points, Body 5 points, Flavor 4.5 points, Aftertaste 4.5 points

Suitable roast level: City/Full city Top-grade Mandheling is suitable from city to Italian; the light roast has an extremely clean cup with rich acidity and sweetness; the dark roast has an extremely deep flavor and thick body. If it is an ordinary grade, it is recommended to roast to full city or a little darker.

Coffee cultivation in Sumatra began in the 18th century, when the growing area was near Aceh Province by Lake Tawar in the north. Today, most Sumatran coffee regions are in the south, in the Rindong, Subulussalam, and Takengon coffee-growing areas. Because the differences between growing regions in Sumatra are not great, it does not use production area as a distinguishing standard; rather, picking and processing methods have a greater impact on the coffee's flavor. The famous "Golden Mandheling" is precisely the excellent product resulting from strict Japanese control of these procedures. This trend has now become a consensus in Sumatra, so some famous coffee estates have been invited to serve as consultants to local coffee estates, using the famous estates' technology and know-how to improve the quality of their own coffee. Mandheling is one of the coffee beans most suitable for dark roasting in the world. One famous reason is that after dark roasting, its own characteristics do not disappear. Mandheling's heavy flavor and low acidity, plus its thick mouthfeel like Chinese herbal medicine, make it very popular in Taiwan. In fact, high-quality Mandheling is also very suitable for medium-light roasting, and at such a roast level it can display a good fruit flavor.

Sulawesi Aroma 3.5 points, Brightness 4 points, Body 4 points, Flavor 4 points, Aftertaste 4 points

Suitable roast level: City/Full city Full city, that is, dropping the beans just before the second crack begins, is most ideal. Because Sulawesi beans do not darken much during roasting, if you use color as the standard for roast level, it is very easy to over-roast.

Sulawesi is also sometimes called Celebes, the latter actually being the old name. Sulawesi has three processing methods: washed, dry, and semi-washed, but although washed beans look good, their cup is often extremely flat. The ugly dry-processed beans, on the other hand, have a thicker body and better taste. In fact, most dry-processed beans are semi-washed: the farm first separates the pulp and seeds, sends the beans to a processing plant, then ferments and washes them, or directly washes them, and then dries them in the sun. Sulawesi coffee has low acidity, a thick body, and a somewhat deep herbal taste, overall quite similar to Sumatra Mandheling. The most representative producing area is Toraja. Besides being a very distinctive single-origin bean, Sulawesi is also very suitable for blending into espresso recipes.

Source: Barista Blog

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

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