What Is the Origin of Mandheling Coffee?

Mandheling is not a region, port or variety but a misreading of Mandailing, the name of an Indonesian people. The story traces to World War II, when a Japanese soldier in Indonesia asked a café owner for the coffee's name and the owner, thinking he was asked where he was from, answered Mandailing. After the war the merchant PWN shipped 15 tons to Japan, and the name spread from there.

Production today centers on the shores of Lake Toba in northern Sumatra, and the cup carries herbal and forest-like aromas with a full body. Golden Mandheling earned its reputation through stricter quality control and four rounds of hand sorting, which produces darker green, more uniform beans. A medium-dark roast with a Kono dripper and a three-pour method keeps the mellow character consistent.

Mandheling is known for its rich aroma, full body, and unique herbal spice notes. Among them, Golden Mandheling gained fame because the Japanese introduced stricter quality control and four rounds of hand sorting. Mandheling is not the name of a producing region or variety, but a mispronunciation of the Mandailing people. The story can be traced back to the experiences of Japanese troops in Indonesia during World War II. After the war, it was introduced to Japan by the Pwani Coffee Company (PWN) and became popular, with production concentrated around Lake Toba in northern Sumatra. This article sorts out the sources of Mandheling's flavor, explains why the green beans are not low in acidity yet taste low in acidity, and shares Front Street Coffee's medium-dark roasting approach, Kono dripper choice, and three-pour brewing parameters to help you consistently present its mellow characteristics.

When people mention Mandheling coffee, they often first think of its full-bodied aroma, rich mouthfeel, and strong taste, as well as its highly recognizable herbal and spice notes. Golden Mandheling was promoted by the Japanese more than a decade ago with stricter quality management: after four rounds of hand sorting to remove defective beans, the result was Golden Mandheling with a darker green color and a more uniform bean appearance, which also opened up new market demand and even made it sought after in European and American markets.

Mandheling is not the name of a producing region, place, port, or coffee variety, so where exactly does the name come from? The answer is related to the Mandailing people of Indonesia and is a misreading in transliteration.

During World War II, when Japan occupied Indonesia, a Japanese soldier drank a very aromatic and mellow cup of coffee in a local cafe and asked the owner for the name of the coffee. The owner mistakenly thought he was asking, "Where are you from?" and answered: Mandailing. After the war, the soldier recalled the "Mandheling" he had drunk in Indonesia and asked an Indonesian coffee merchant to ship 15 tons of coffee to Japan. It became very popular, and the name Mandheling spread in this way. That coffee merchant was the later well-known Pwani Coffee Company (PWN). The widely known Mandheling is produced around Lake Toba in northern Sumatra, and the finished cup often carries a fresh herbal and forest-like aroma.

In fact, the green beans of Mandheling coffee are not low in acidity themselves, so why is the acidity not so prominent when we actually drink it?

The low-acid performance comes from a shorter and weaker fermentation process, as well as a longer drying time—if your impression of the fermentation step in the wet-hulled process is vague, you can go back and read it again. As for the often-mentioned "earthy" and other flavors of wet-hulled beans, opinions vary: some believe it is related to the bean varieties used in producing regions associated with the wet-hulled process (Timor and Catimor lines, with Robusta ancestry), some believe it is the result of organic interactions between green beans and the external environment, and some even attribute it to a higher proportion of defective beans! Of course, there are indeed quite a few...

Front Street Coffee roasts Mandheling to a medium-dark roast level, using a roasting approach that extends dehydration time and lowers the heat to coast, with the aim of reducing acidity, enhancing body, and lengthening the caramelization reaction time so the beans gain more caramel-like flavors.

In roasting, to highlight Mandheling's mellow and rich characteristics, Front Street Coffee's roaster uses a darker roast level: charge at 200°C, turn yellow at 5 minutes 40 seconds, enter first crack at 9 minutes 54 seconds, develop for 3 minutes 30 seconds, and drop at 204.5°C.

For this roast level, Front Street Coffee chooses the Kono dripper for brewing. The Kono dripper's ribs are short and straight, its holes are small, and its flow rate is slow, so water stays in contact with the grounds longer, thereby better showcasing Mandheling's body.

Front Street Coffee's brewing recommendations for Mandheling coffee are as follows:

The water temperature is recommended to be 85–88°C. Because the beans are roasted darker, brewing with a lower water temperature can reduce the chance of over-extraction; For grind size, medium grinding is recommended, that is, the coarseness of granulated sugar. Use a relatively coarser grind to lower the extraction yield.

Use 15 grams of coffee grounds, with a coffee-to-water ratio of 1:15 and a water temperature of 88°C. For the first pour, add 30 grams of water to bloom, and bloom for 30 seconds; for the second pour, add 95 grams of water, bringing the total water amount to 125 grams; after a 10-second interval, pour in the remaining water, finishing the pour in about 1 minute 30 seconds, wait for the coffee liquid to filter slowly, and finally remove the dripper at 2 minutes to end extraction.

Using a water temperature of 88°C is to avoid excessive burnt bitterness caused by high temperatures; the 1:15 coffee-to-water ratio is to achieve a balanced taste; and the three-pour method ensures there is enough time to extract coffee substances.

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