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Yirgacheffe Coffee Bean Grades and Processing Methods

November 12, 2017
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What do Yirgacheffe coffee bean grades tell you?

Yirgacheffe coffee bean grades reflect the region's grading system, which sorts beans by quality alongside variety and processing method. Yirgacheffe, once part of Sidamo, became an independent Ethiopian region known for floral aroma and bright acidity, and its coffees cover both washed and natural processing, including washed G2 and Red Cherry lots.

The region sits roughly 2,000 meters above sea level and holds over forty cooperatives, with farms managed by family units across micro-regions such as Kochere, Misty Valley, and Gedeb. Comparing washed Gedingding and natural Red Cherry shows how the coffee process shapes flavor within the same grading framework.

Yirgacheffe is Ethiopia's most representative specialty coffee region, famous for its elegant floral aromas and bright acidity. Front Street Coffee's bean list features several Yirgacheffe coffees, covering both washed and natural processing methods, each with its own distinctive flavor. This article will systematically review Yirgacheffe's regional background, variety classification, grading system, and processing differences, with a focus on comparing the flavor characteristics of Front Street washed Gutingding and Front Street natural Red Cherry. It will also introduce the origins and operational model of the Red Cherry Project, along with detailed information on Front Street Kochere, Konga Cooperative, washed G2, and other products. Finally, Front Street's roasting analysis and brewing recommendations are included to help coffee enthusiasts gain a comprehensive understanding of Yirgacheffe coffee's unique charm.

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When it comes to the representative of African specialty coffee, most people's first thought is Front Street Yirgacheffe. Its alluring floral aroma and crystal-clear acidity are unforgettable at first sip. On Front Street Coffee's bean list, there is more than one Yirgacheffe series produced in Ethiopia. According to Front Street's bean selection principle, if two coffees have overly similar origins and flavors, they will not appear on the same bean list simultaneously. Next, Front Street Coffee will give everyone a comprehensive understanding of Yirgacheffe coffee.

Yirgacheffe Coffee Region

Yirgacheffe has always been one of Ethiopia's most important coffee-producing regions. It was originally part of the Sidamo coffee region, but due to the unique flavors its coffee beans exhibit, it was later designated as an independent region. It can be said that Yirgacheffe is not only a place name but also synonymous with a specific flavor profile. The region is situated at high altitude, approximately 2,000 meters above sea level. The Yirgacheffe area is home to over forty cooperatives, with coffee cultivation managed on a family-unit basis.

The Yirgacheffe region also encompasses many well-known micro-regions, such as Kochere, Misty Valley, Gedeb, and others. These micro-regions each have excellent cooperatives, and the Yirgacheffe coffee beans they produce carry distinctive regional flavors. When selecting Yirgacheffe coffee beans, Front Street Coffee considers not only outstanding flavor and consistent quality but also places particular emphasis on each coffee's uniqueness. Front Street Coffee believes that every Front Street Yirgacheffe has its own distinct identity—for example, Front Street Yirgacheffe Gutingding stands out for its prominent tea-like quality, while Front Street Yirgacheffe Red Cherry features a berry-forward profile. For this reason, every coffee bean Front Street Coffee offers, even if from the same region, will present subtly different flavors as long as the microclimate, field management, cultivation methods, or processing techniques differ. This is precisely one of the motivations behind Front Street Coffee's continuous bean selection.

Yirgacheffe Coffee Bean Varieties

Yirgacheffe's coffee varieties are local heirloom types, with beans that are relatively small and round in shape, mostly between 14 and 15 screen sizes. Ethiopia is known as coffee's natural gene bank, with an enormous number of varieties that are extremely difficult to identify and classify. Additionally, the Ethiopian government, out of concern for protecting natural coffee resources, is unwilling to disclose variety information, so coffee beans exported from Ethiopia are generally collectively referred to as "Heirloom" native varieties.

However, Front Street Coffee has noticed that in this year's Ethiopia COE competition, Ethiopian authorities have begun distinguishing coffee varieties, with the 13th place going to the Kurme variety from the Yirgacheffe region. Kurume is not a single variety but rather a variety group formed after coffee varieties in the Yirgacheffe area adapted to local climate and soil over a long period. Kurume trees produce smaller fruits with high annual yields, abundant sweetness, and rich floral aromas. This variety is mainly cultivated in the Guji and Yirgacheffe areas.

In addition, many varieties named with numerical codes have emerged in recent years, such as 74110, 74158, etc. These were actually developed by the JARC Jimma Agricultural Research Center, where "74" represents the classification and selection conducted in 1974, and the following three digits are the selection numbers.

Yirgacheffe Coffee Bean Grading

ECX (Ethiopian Commodity Exchange, established in 2012) grades Ethiopian coffee beans along two dimensions. One dimension is defect rate: regardless of washed or natural processing, green beans with no more than 3 defective beans per 300 grams are Grade G1, and those with 4 to 12 defective beans are Grade G2.

After ECX was established in 2008, it began using a combination of green bean physical characteristics and cup testing flavor characteristics for scoring and grading.

ECX divides all coffee into two major types by processing method—unwashed and washed—and then classifies them into the following three categories:

a. Specialty: Few defects, high cup testing flavor quality

b. Commercial: Does not reach specialty grade but is above domestic consumption grade

c. Local / Domestic: Many defective beans (including unripe beans), or poor flavor due to being out of season or improper storage (consumed within Ethiopia, not entering the international market)

Among these, specialty and commercial grades are intended for the export market. The grading standards differ slightly across categories.

Yirgacheffe Coffee Processing Methods

Ethiopia traditionally used the ancient natural processing method. After the washed method was introduced in 1972, over decades of development, the proportion of washed processing has far surpassed natural processing. Washed processing can effectively reduce the defect rate of coffee beans and presents a cleaner, more transparent flavor profile.

Natural processing is one of the oldest and most traditional processing methods. After harvesting, coffee cherries are placed directly in the sun to dry. This is particularly common in areas with abundant sunlight or scarce water resources. About seventy percent of coffee cherries across Ethiopia's various regions are processed naturally. Front Street believes that compared to washed coffee, natural coffee has lower acidity, higher sweetness, and a clearer mouthfeel, but slightly less cleanliness. In terms of flavor, it often carries more berry notes and greater complexity.

Front Street Yirgacheffe's natural processing flow is as follows: after sorting usable coffee cherries, whole coffee cherries with the flesh and skin completely intact are placed on raised drying beds for sun drying. This labor-intensive raised-bed drying method isolates the cherries from the ground, preventing them from picking up earthy off-flavors during drying, thereby creating an exceptionally clean fruit flavor. After more than two weeks of sun drying, the dark brown coffee cherries are professionally stored, awaiting full flavor maturation. The coffee beans are only removed from the cherries before shipment, and the sweetness can be imagined.

The washed processing method first uses a depulper to remove the skin and flesh of the cherries, then places them in fermentation tanks for 18 to 36 hours to allow the mucilage layer to break down (the specific duration depends on local temperature and humidity conditions). Next, the parchment beans are scrubbed through washing channels for 30 to 60 minutes. Through channel design and water flow, low-density, poor-quality beans are eliminated, while high-quality parchment beans are placed on African-style raised beds to dry for about 14 days. After drying is complete, they are first stored in the processing plant warehouse, then transported to a Dry Mill before export for hulling, and undergo a series of complex procedures including foreign matter removal, silver skin polishing, gravity sorting, and color sorting, before finally being bagged for export.

The most fundamental difference between natural and washed processing is: natural processing retains the flavor of the fruit flesh, while washed processing removes it, presenting the truest taste of the coffee bean itself. The mouthfeel differences are significant—washed is cleaner and more transparent, while natural is richer in layers. Front Street Coffee, precisely because the washed method can express the most essential flavor of coffee beans, prioritizes recommending washed products when a customer is tasting a coffee from a certain region for the first time, as this allows them to more clearly understand the flavor characteristics of that region.

It is also easy to distinguish them by appearance: washed green beans are generally bluish-green, while natural green beans tend toward yellow-green. After roasting, washed coffee beans have visible silver skin, while natural coffee beans have almost no residual silver skin, and the bean surface is relatively smooth. Below, Front Street Coffee will introduce which natural and washed beans Front Street offers.

Front Street Yirgacheffe Natural Red Cherry Coffee Beans

Country: Ethiopia

Region: Yirgacheffe

Processing Plant: Aricha

Altitude: 2,300 meters

Variety: Local heirloom

Processing Method: Natural

Grade: G1

Flavor: Berry, lemon, strawberry, fermented wine aroma

Red Cherry Project

The Red Cherry Project, full name OPERATION CHERRY RED PROJECT, abbreviated as OCR. Nowadays many cafes sell coffee beans from the Red Cherry Project. This concept was first proposed by Dutch green bean trader Trabocca in 2007. Trabocca provides funding for production conditions at the origin and purchases Ethiopian coffee cherries at higher prices, while requiring farmers to pick only fully ripe cherries.

Coffee cherries turning red is a sign of ripeness, but cherries on the same tree do not ripen simultaneously—the span can be as long as three months. Picking is already laborious, and without this requirement, farmers would often pick both red (ripe) and green (unripe) cherries together and send them to the processing plant to reduce the number of picking rounds. In photos of machine harvesting in South America, many unripe cherries can often be seen mixed in. When green bean buyers are willing to purchase at higher prices, farmers pick more selectively to earn more income, and thus the Red Cherry Project came into being.

The Red Cherry Project is also an enhancement measure that encourages farms to invest more effort in sorting and selecting beans, and the prices of these coffees are correspondingly higher. The project invested $5,000 in 2008 to purchase new sun-drying racks, another $8,000 in 2009 for new sun-drying racks and shade nets, $9,000 in 2010 for generators, and continued with $10,000 in 2011 to improve some local coffee transport roads, making transportation more convenient and efficient. Trabocca also provided interest-free loans for purchasing new coffee cherry depulpers and coffee bean sorting machines. To facilitate supplier purchasing, it further invested $14,000 in 2012 to build a high-quality Addis Ababa coffee cupping laboratory.

Trabocca assists farmers in improving production standards by providing financial loans, new hardware equipment, and production processing technical knowledge, and promises to purchase at generous prices as long as the actual output quality meets standards in the cupping laboratories in Addis Ababa, Ethiopia, and Amsterdam, Netherlands. The passing standard set by Trabocca is 88 points.

After processing at origin is complete, Red Cherry Project coffee beans are immediately packaged in GrainPro bags or vacuum-sealed boxes and transported to Djibouti to await shipping. Through real-time monitoring, safe transportation, and timely and appropriate handling, the utmost quality is pursued. Roasters also benefit from being able to purchase high-quality coffee beans through the Red Cherry Project. Ethiopian coffee quality has improved with better prices, and Trabocca returns profits to farmers, continuously improving and consistently enhancing quality.

The main regions where the Red Cherry Project is implemented include Yirgacheffe, Sidamo, Bonga Forest, Limu, Kembata, Illubabor, Harar, and Limu. These regions have unique flavors that fully showcase the charm of Ethiopian coffee. However, Front Street Coffee believes that nowadays, essentially all specialty-grade coffee beans are produced using a model similar to the Red Cherry Project.

Front Street Yirgacheffe Aricha Coffee Beans

Region: Yirgacheffe Adorsi Processing Plant

Altitude: 1,900-2,000m

Processing Method: Natural

Grade: G1

Variety: Heirloom native

Flavor: Ripe fruit, green grape, lemon, cream, grape

The champion of the natural category in the 2019 Ethiopian harvest season cupping competition was won by the Adorsi processing plant.

The Adorsi processing plant belongs to Testi Coffee, a coffee export company run by the Yonis family, founded in 2009 by Faysel A. Yonis. In terms of competition results, this champion lot scored 91 points. Last year's Peony scored 88 points in the same competition, and 2019 Adorsi was 3 points higher.

Front Street Coffee's lot comes from Front Street Yirgacheffe Konga Cooperative natural beans at an altitude of 1,850 to 2,050 meters. The Konga Cooperative is composed of 1,556 smallholder coffee farming families, located 5 kilometers south of Yirgacheffe, with an average coffee cultivation altitude above 1,800 meters, and a harvest period from October to February each year. The Konga Cooperative was established in 1994 and joined the YCFCU cooperative union in 2002, becoming one of 26 union members. It is located in the Gedeo region of southern Ethiopia, and its name comes from the nearby Konga River and the local Konga village.

Front Street Yirgacheffe Washed Gutingding Coffee Beans

Country: Ethiopia

Region: Yirgacheffe Gedeo Zone

Altitude: 1,900-2,300m

Variety: Native heirloom (Heirloom)

Processing Method: Washed

Grade: G1

Flavor: Citrus, black tea, cream, caramel, almond

Front Street Yirgacheffe Gutingding Cooperative is located in the Worka region at the southeastern end of Yirgacheffe. It was originally part of the Worka Cooperative under the Yirgacheffe union YCFCU. Later, as people's attention to coffee bean traceability increased, distinctive small regions were discovered one by one by coffee hunters around the world. In 2012, Gutingding, with about 300 members, became independent from the Worka Cooperative and established the Gutingding Cooperative. Gutingding village was the first village area to become independent, and many smallholder farmers were originally members of the Worka Cooperative, so their production expertise goes without saying. The Gutingding Cooperative is called the last pure land of Yirgacheffe, and the processing methods used are also very traditional (washed and natural processing).

Front Street Yirgacheffe Kochere Washed Coffee Beans

Region: Ethiopia Yirgacheffe Kochere

Variety: Native heirloom (Heirloom)

Growing Altitude: 1,650-1,800 meters

Processing Method: Washed

Grade: G1

Flavor: Citrus, berry, tea-like, cream, slight nuttiness

Kochere is located 25 kilometers southeast of Yirgacheffe, Ethiopia, a small region made wealthy by coffee, at an altitude of 1,650 to 1,800 meters, and is one of Yirgacheffe's three well-known micro-regions. The local population is about 100,000, and coffee beans are the main source of income. The processing equipment in this area is very advanced. The well-known coffee review website Coffee Review once gave Kochere washed beans a high score of 94 points.

Kochere is one of the 77 Woredas (administrative districts) of Ethiopia's SNNPR. In the coffee world, Kochere belongs to the Gediyo part of Yirgacheffe and is one of Yirgacheffe's most important regions. Kochere can be further subdivided into several micro-regions, and coffees produced within the area are sometimes named more specifically by source town name (such as Chelelektu or Teklu Dembel), processing plant (such as Teklu Dembel processing plant and this lot's Arim processing plant), or micro-area (such as Banko Gutiti), in line with today's coffee traceability trend. The stronger the traceability of a lot, the more specific the source, and the higher the stability and reproducibility of flavor each year, naturally at a higher price as well.

Kochere's production model is mainly based on local smallholder farmers delivering their lots to the cooperative for unified processing. About 100,000 people in the local Chalalacktu village depend on coffee for their livelihood, and related production activities are their primary economic source. Due to the income generated by coffee production, the local standard of living is considerably higher than many Ethiopian villages, with well-equipped health facilities and higher schools. Advanced processing equipment has allowed Kochere region coffee to maintain high standards in washed processing, featuring complex notes of molasses and citrus, clean and sweet.

The Front Street Yirgacheffe Washed Kochere that Front Street Coffee has acquired is the highest-specification G1 grade lot, with a strong regional flavor character, featuring clean and fresh lemon aroma along with delicate and elegant jasmine floral notes, melon, citrus, ginger, spiced tea, and other rich aromas and flavors.

Front Street Yirgacheffe Konga Cooperative

Country: Ethiopia

Estate: Konga Cooperative

Region: Yirgacheffe

Altitude: 1,300-2,000m

Variety: Ethiopian native heirloom

Processing Method: Washed

Flavor: Berry, cream, honey, citrus, bright juicy mouthfeel

The Konga Cooperative (Konga Coop) is composed of 1,556 smallholder coffee farming families, located 5 kilometers south of Yirgacheffe. It was established in 1994 and joined the YCFCU cooperative union in 2002. These smallholders' coffee cultivation areas average less than 1.25 hectares, at altitudes of about 1,800 to 2,000 meters, with varieties mainly being a mix of Typica and Heirloom (local native varieties).

Every one to two years, cooperative members hold elections to vote for an executive committee. The executive committee can make decisions on new equipment purchases, exchange business information with members, and determine payment methods for transactions. In addition, YCFCU assigns professional managers to cooperatives to provide guidance and suggestions on harvest, production, and other aspects to increase output and improve quality. The establishment of cooperatives protects member farmers from being exploited at low prices by buyers, and cooperatives can also provide loan assistance during financial difficulties, benefiting both farmers and coffee production.

Front Street Washed Yirgacheffe G2

Front Street also offers a Front Street Yirgacheffe that is washed G2. G2 represents the coffee grade. Ethiopia distinguishes grades by defect rate: G1 is the best, with fewer than 4 defective green beans per 300 grams, while G2 has fewer than 13 per 300 grams. Many people assume G1 is necessarily superior to G2. In terms of green bean quality, G1 is indeed higher than G2, and the price is several times that of G2. But at the roasted bean stage, this difference can be said to be minimal, while the price gap actually widens further.

Front Street knows well during roasting that defective beans can affect coffee roasting, so before roasting, all green beans undergo a round of hand sorting to pick out obvious defective beans. After this step, G1 and G2 coffee beans can be said to be nearly indistinguishable. Those who know coffee will not hesitate to choose G2. One reason is that the price of 25 yuan/100g is truly a good deal—the roasted bean price is 30 yuan cheaper than G1. Another reason is that if you are familiar with Ethiopian coffee beans, you will find that the small-sized beans are often the ones that truly bring out the sweet, fruity flavors. G1 to some extent tends toward larger bean sizes, while G2 has more of a mix of large and small beans, which actually better highlights Yirgacheffe's unique flavor.

Front Street Coffee Roasting Analysis

Front Street roasting uses the representatives of Yirgacheffe natural and washed—Front Street Red Cherry and Front Street Gutingding—as examples.

For Front Street Natural Red Cherry, Front Street conducts two rounds of manual defective bean sorting before roasting. Pre-roast hand sorting lays the foundation for roasting quality coffee. This Front Street Natural Red Cherry coffee has extremely low defects. Using a Yangjia 800N, with 600g bean charge: charge at 200°C, damper set at 3.5, after 1 minute adjust heat to 160°C with damper unchanged, adjust heat once at 148°C down to 130°C, roast until 5'03'' at 151°C when the bean surface turns yellow, grassy smell completely disappears, dehydration is complete, adjust heat to 105°C, open damper to 4; at the 8th minute, ugly wrinkles and dark patches appear on the bean surface, the bread-like smell clearly transitions to coffee aroma, which can be defined as the prelude to first crack. At this point, listen carefully for the sound of first crack. First crack begins at 9:07, reduce heat to 70°C, open damper fully (adjusting heat requires great care, do not reduce so much that there is no cracking sound), drop at 194°C.

Front Street's roaster, considering that Front Street Gutingding features fruit acidity as its primary flavor profile, considers it more suitable for a light roast profile, which can highlight Front Street Gutingding's clean mouthfeel, bright fruit acidity, and notable sweet aftertaste.

Using a Yangjia 800N, with 480g bean charge: charge at 175°C, damper set at 3, heat at 120; turning point at 1'32", at 140°C heat unchanged, open damper to 4; at this point the bean surface turns yellow, grassy smell completely disappears, entering the dehydration phase. At 166°C reduce heat to 100, at 176°C reduce heat to 80, damper remains unchanged. At 8'28", ugly wrinkles and dark patches appear on the bean surface, the bread-like smell clearly transitions to coffee aroma, which can be defined as the prelude to first crack. At this point, listen carefully for the sound of first crack. First crack begins at 9'38", adjust damper to 5 (adjusting heat requires great care, do not reduce so much that there is no cracking sound), develop for 1'30'' after first crack, drop at 193.5°C.

Brewing Method

Front Street Coffee recommends using a V60 dripper, water temperature of 90°C (can pour at 90.5°C), water-to-coffee ratio of 1:15, 15g dose, grind size BG#6M (80% passing through China No. 20 standard sieve). Front Street Coffee would like to mention here why sieving is necessary before determining grind size—this is actually the grind recommendation provided by the Specialty Coffee Association of America (SCA) for pour-over coffee. Front Street Coffee has verified through extensive testing that brewing with different grind sizes produces noticeably different results, and each coffee bean's grind size will differ, which is the significance of sieving. If you don't have a sieve at home, Front Street Coffee suggests observing the flow rate to judge: if the flow is too fast, the grind is too coarse; if too slow, the grind is too fine.

First, rinse the filter paper and preheat the dripper and carafe. For the first pour, add 30g of water for a 30-second bloom, then pour 95g (scale reads about 125g), completing the pour in about 1 minute. When the water level drops to two-thirds of the coffee bed, pour the remaining 100g (scale reads about 225g), completing in about 1 minute 35 seconds. Drip completes at 2 minutes 05 seconds. Remove the dripper, and extraction is complete.

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

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