Sidamo is an important specialty coffee region in the southern highlands of Ethiopia, equally renowned as Yirgacheffe and famous for its naturally processed Huakui coffee. The region encompasses two well-known sub-regions, Guji and West Arsi, with elevations mostly between 1,400 and 2,200 meters, where heirloom varieties express diverse flavors amid complex terrain and microclimates. The two Sidamo beans currently sold by Front Street Coffee are both naturally processed, one from the Buku Abel processing station in Hambella, Guji, and the other from the smallholder farming system in West Arsi. This article systematically reviews Sidamo's geographical environment, variety characteristics, and processing method differences, along with Front Street's brewing parameters and flavor comparisons, to help coffee enthusiasts fully understand the unique charm of this region.

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As the birthplace of coffee, Ethiopia possesses an extraordinarily rich resource of coffee varieties, and coffee trees around the world can almost all be traced back here. Within Ethiopia, different regions each present distinctly different flavor profiles. Sidamo and Yirgacheffe are both representative specialty coffee regions of the country, and both have both washed and natural processing methods. When it comes to Yirgacheffe, the most widely known are washed lots; when it comes to Sidamo, it is the naturally processed Huakui that is most famous. At Front Street Coffee, both beans from the Sidamo region are naturally processed.

Sidamo green beans tend toward a grayish color, with uneven particle sizes—some large, some small. Its acidity can be soft or intense, its body can be heavy or light, and it combines sweetness with spice, making it one of the representatives of garden-style coffee cultivation in the southern Ethiopian highlands. Compared with most African coffees, Sidamo's uniqueness lies in its clean fruit acidity, smooth mouthfeel, and delicate floral and herbal notes.

Ethiopia's climate shows a clear polarization: on one side are humid tropical rainforests, on the other arid deserts and gobi, with coffee cultivation mainly concentrated in the high-altitude rainforest zones. The main rainy season occurs from June to August, with annual precipitation in the major coffee regions ranging from about 1,000 to 2,000 millimeters, and average annual temperatures between 15 and 30 degrees Celsius. The country has many high mountains and belongs to a tropical cloud forest landscape, with coffee mostly grown on high plateaus. The low-temperature environment brought by high altitude reduces pest occurrence, resulting in less pesticide use; at the same time, coffee cherries ripen more slowly, giving the coffee trees more time to accumulate nutrients.

Sidamo Coffee Region

The Sidamo area is located in southern Ethiopia, extending eastward to the Arsi and Bale administrative zones and westward to the Gamogofa administrative zone, with coffee cultivation at elevations between 1,400 and 2,000 meters. The local economy is primarily agricultural, and coffee is mainly grown in areas surrounding the East African Rift Valley. In recent years, Sidamo has developed strongly and has become an important coffee export hub. The coffee flavors of this region are extremely diverse; different soil types, microclimate conditions, and a vast number of heirloom varieties mean that coffee from each town has noticeably distinct flavors.

In the Sidamo area, the most prestigious coffee-growing areas are Guji (GUJI) and West Arsi. Most Sidamo coffee uses the natural processing method, and Front Street Coffee believes that natural processing gives the coffee of this region rich fruit aromas and a smooth mouthfeel.

Guji Region

The Guji region was once part of Sidamo and was separately designated as a new region by the Ethiopian Commodity Exchange (ECX) in 2010. It is located southeast of Yirgacheffe, with complex terrain encompassing towering mountains, valleys, and plains. The soil in this area is fertile black soil (Vertisol), nearly two meters deep, with an average elevation exceeding 1,800 meters. The significant day-night temperature difference brought by these special geographical conditions provides an ideal terroir foundation for producing high-quality specialty coffee. And for making Guji famous, Front Street must mention the Huakui bean.

Huakui comes from Hambella, located within Guji, Ethiopia's largest coffee region, administratively part of Oromia State. To the west, Hambella faces Yirgacheffe's Kochere across a mountain, with a highland about 30 kilometers wide at an elevation of 3,200 meters lying between the two regions; to its southeast, east, and north, it borders Guji's Shakiso, Uraga, and Kercha sub-regions respectively, making it Ethiopia's highest-altitude coffee sub-region.

Currently, the Hambella region has nearly 20 processing plants of various scales. In 2017, Ethiopian DW Green Bean Company sent its coffee beans to the TOH (the Taste Of Harvest) green bean competition hosted by the African Coffee Association, and a naturally processed lot from the "Buku Abel" processing station won the TOH Ethiopia championship with its rich strawberry and cream aromas. This lot of green beans was subsequently introduced to China by Beijing green bean trader Hongshun, and in the same year Li Jianfei used this bean to win second place in the 2017 World Brewers Cup China region. Among the many Geisha competition beans, this Ethiopian bean stood out remarkably, earning the name "Huakui." (Geisha means geisha in Japanese, and Huakui refers to the top geisha, highlighting the excellence of this bean.)

If we understand Huakui coffee in a narrow sense, then only the batch from the 2017 TOH natural group champion lot that entered China can be called Huakui. Of course, it would be a pity if this wonderful name were merely a fleeting phenomenon, so Hongshun subsequently continued to import coffee beans from the "Buku Abel" processing station in the Hambella region and named them Huakui 2.0, Huakui 3.0, Huakui 3.1, etc., to distinguish them from the earlier Huakui and different lots or harvest seasons. At this point, Huakui coffee still maintained certain characteristics—namely, it was purchased and imported by Hongshun, and the region remained locked to the "Buku Abel" processing station in Hambella.

Afterward, DW Company added processing stations in Dimtu, the core production area of Hambella, including "Buku Abel," "Buku Saysay," "Haro Soresa," and "Tirtiro Goye," with an annual coffee output of approximately 1,100 tons. From the perspective of growing regions and processing stations, among all these estates and processing sites, only coffee from the processing area of the "Buku Abel" processing station covers the small production area that originally produced the natural Huakui. In other words, only coffee beans produced by Buku Abel and naturally processed deserve to be called "Huakui."

The area where Huakui is grown has an elevation exceeding 2,000 meters, and the coffee trees are surrounded by tropical plants such as sugarcane and bananas, which provide appropriate shade for the coffee trees. Coffee is essentially a crop, naturally and directly related to climate and environment, so the flavor varies slightly each year. The naming of Huakui X.0 follows the year: Huakui 2.0 was released in 2018, Huakui 3.0 and 3.1 in 2019, Huakui 4.0 in 2020, Huakui 5.0 in 2021, Huakui 6.0 in 2022... Now Huakui 8.0 has also officially launched, becoming a staple bean on many coffee enthusiasts' must-buy lists.

West Arsi Region

West Arsi is located between the two well-known coffee-growing regions of Yirgacheffe and Hararge, at elevations of 1,900 to 2,200 meters, in the western part of the Sidamo area. The name of this region comes from a branch of the Oromo people who have long settled there.

West Arsi is composed of three woredas (Ethiopia's third-level administrative divisions): Arsi, Bale, and East Shewa. Approximately 88.52% of the population in this area are Oromo, which is historically significant in coffee history because they were the earliest tribe in human history to drink coffee, and half of Ethiopia's coffee comes from this region.

Coffee cultivation in the West Arsi region is mainly based on a smallholder model, with each smallholder's farm averaging a modest size of about 2 to 3 hectares, though even this is often slightly larger than the 1.5 to 2 hectares common in most of Ethiopia. Although local coffee cultivation techniques are still developing, compared with other regions, West Arsi's cultivation techniques are developing very rapidly. Coffee farmers do not need to hire temporary or full-time workers, instead selecting coffee with the help of family members, which allows them to better control coffee quality. Processing stations also typically pay extra for fully ripe red cherries, greatly boosting coffee farmers' enthusiasm.

Huakui's Coffee Variety

Like many Ethiopian coffee beans, Huakui's variety is what we commonly call "heirloom." The garden farming system is the model on which the vast majority of Ethiopian smallholders depend for their livelihoods, and Heirloom varieties come from those "unknown varieties" in their backyards—coffee trees may have been left by a previous landowner, obtained through sharing among neighbors, or grown from seeds introduced from other production areas. Various coffee plants are mixed with other cash crops on the land, and the cherries are picked and sold after ripening.

Therefore, Heirloom does not refer to a specific coffee variety; it represents a green bean blend from a production area—coffee collected from multiple smallholders' harvests from the same period and combined together, with a single lot possibly containing dozens or even hundreds of unclassified varieties. Precisely because of differences among varieties and because each blend is different, these coffees are inconsistent in particle size, dimensions, and shape—some large, some small, some long, some round—much like a big mixed pot.

Coffee Bean Processing Methods

Sidamo coffee beans are processed by both washed and natural methods. The washed method requires first selecting high-quality cherries, removing the skin and pulp, then soaking and fermenting them in a tank, and finally drying them to a moisture content of about 12%. The natural method is much simpler: using direct sunlight, the cherries are dried to a moisture content of about 12%, and then the skin and pulp are removed.

Different processing methods also cause differences in the flavors presented by coffee beans. Washed processing better showcases Sidamo coffee beans' most original citrus acidity and floral and herbal aromas, while natural processing adds aroma on top of the original flavors.

The taste of natural Sidamo is close to floral, but with a slight earthy note; washed Sidamo has a nutty fruit aroma and a slight cocoa aroma. What both share is a smooth mouthfeel, moderate viscosity, and acidity and aroma that are both comfortable and pleasant. Light or medium roast is suitable for single-origin brews, while medium or dark roast is suitable as a base for blended coffee and high-quality Espresso.

Front Street's Brewing Parameters for Sidamo Coffee:

For light-roasted Sidamo coffee, Front Street chose: V60 dripper, water temperature 90°C, water-to-coffee ratio 1:15, coffee dose 15g, grind size (80% passing through a Chinese No. 20 standard sieve).

Using staged extraction, first bloom with twice the coffee dose in water, that is, 30 grams of water for a 30-second bloom. The purpose of the bloom is to let the coffee grounds release internal carbon dioxide, thereby making the subsequent extraction more stable. Pour in a slow circular stream until reaching 125 grams, then pause; continue pouring until 225 grams and stop. After the water in the dripper has dripped through, remove the dripper. Timing starts from the beginning of pouring, and the extraction time is 2 minutes 00 seconds. Next, swirl the entire cup of coffee to mix, then pour it into a cup and taste.

[Naturally Processed Arsi Coffee Flavor]: It smells of berries and honey; on the palate, a jam-like sweetness spreads throughout the mouth, full of sweetness, with a nectarine flavor in the finish and a juicy mouthfeel. After cooling, it tastes more like a cup of plum and nectarine juice.

[2025 New Harvest Front Street Huakui Coffee Flavor]: The floral and fruity aroma is very pronounced, with flavors of citrus, passion fruit, strawberry, and oolong tea, and very high sweetness.

In the flavor comparison of these two beans, Front Street Arsi's fruity sweetness and juiciness are slightly superior, especially when hot, when the jam and honey flavors are irresistible, and as the temperature drops, the juiciness becomes even more pronounced and very comfortable.

Front Street Huakui leans more toward tropical fruit flavors, and the alternating contrast between sweetness and acidity is surprising. Compared with the two, Huakui's fermented note is somewhat stronger.

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