Introduction to the Lindong producing area of Sumatra Island in Mantenin, Indonesia, which is mainly treated by half-sun or sun treatment.

The coffee produced by the Batak people in Lake Toba or the Lindong Mountains in north-central Sumatra is mostly grown without shade, and is mainly treated by half-sun or sun treatment, with obvious herbal and soil flavor, low acidity and muggy aroma, which is the most important feature of Mantenin coffee, so it is called Mantenin coffee. In the northernmost area of Sumatra, Tawahu or Achelle is planted by another Gaga friend in the traditional shade method, which is mainly washed or semi-washed, with a bright sour flavor and a light fragrance tone. American boutique coffee industry mostly calls this area coffee Axie Coffee, Gayoushan Coffee or Tawahu Coffee.

In short, the general "Mantenin" coffee has the unique fragrance of herbs and trees, and the particle size is relatively irregular; the "Golden Mantenin" coffee of Indonesia's Pwangni Coffee Company or the "Jinding Mantenin" coffee of the Japanese company are mellow and bright. Caramel sweet smell is more intense, fruit acid taste is also bright and elegant, almost no Mantenin herbal flavor, soil flavor and wood flavor. Mantenin coffee is suitable for medium-and low-grade roasting, which can reduce miscellaneous flavor, while Golden Manning has a wider roasting range. (1) Mantenin refers to half-sun or sun-dried beans in the Lindong Mountains of north-central Sumatra around Lake Toba and at an altitude of 900m to 1200 meters on the southwest bank.

(2) Gold Manning, after four times of manual screening, is higher than the general Mantenin, and the particles are larger.

(3) Tawahu coffee refers to the washed, semi-washed or sun-dried beans (less) in the area of Gayou Mountain near Tawahu, the northernmost region of Sumatra. The renowned La Minita estate in Costa Rica teaches semi-washing technology, and the well-known Dutch coffee group mainly produces Gayou landscape washed beans. Mandailing is not the name of Indonesia, the name of the producing area, the name of the port, nor the name of the coffee variety, but the mispronunciation of Manderling, which originally lived in Sumatra. During World War II, a Japanese soldier was drinking coffee in Sibolga, central Tapanuli, Indonesia. When he asked the shopkeeper what kind of coffee he was drinking, the boss thought he was from, so he replied "Mandailing". When the Japanese soldier returned home after the war, he remembered that the coffee with special taste was called "Mantenin".

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