Does coffee bean processing decide Yirgacheffe flavor?

Yirgacheffe is known for bright, clean citrus-lemon acidity, and the washed and natural methods give the same region two different profiles. Washed processing pushed Yirgacheffe onto the world stage, but naturally processed Yirgacheffe also performs well. The article compares washed Gutingding and Natural Red Cherry beans, covering region background, variety, and the processing workflow that sets them apart.

Yirgacheffe sits at 1,700 to 2,100 meters in Ethiopia, one of the highest coffee-growing areas and well suited to Arabica. Using coffee bean processing as the starting point, the comparison extends to roasting and brewing performance for each bean. Front Street Coffee lays out brewing parameters so beginners and experienced drinkers can see how processing method shapes the final cup.

Yirgacheffe is world-famous for its bright, clean citrus-lemon acidity, and the washed and natural processing methods give it two completely different flavor profiles. Front Street Coffee starts from the region's background, variety characteristics, and processing flow to systematically sort out the core differences between washed and natural processing, and compares the roasting and brewing performance of two beans: Yirgacheffe Washed Gutingding and Natural Red Cherry. Whether you are a beginner just getting into specialty coffee or an enthusiast who wants to understand in depth how processing methods affect flavor, this article will provide a clear and practical reference.

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The reason Yirgacheffe coffee beans can win the favor of coffee lovers around the world is largely due to their clear, bright taste and signature citrus-lemon acidity, and the washed processing method is precisely the key force that pushed this region onto the world stage. However, what Front Street Coffee wants to emphasize is that Yirgacheffe is not only worth paying attention to for its washed beans; naturally processed Yirgacheffe also has an extremely outstanding flavor performance. Next, Front Street Coffee will specifically analyze the different flavor characteristics that these two processing methods give to Yirgacheffe.

Yirgacheffe Coffee Producing Region

Front Street Coffee has always believed that to truly understand a coffee bean, one must approach it from three dimensions: producing region, variety, and processing method. Therefore, next Front Street Coffee will introduce these three points one by one for all coffee-loving friends.

Yirgacheffe itself is a small town in Ethiopia, located between 1,700 and 2,100 meters above sea level, and is one of the highest coffee-growing areas in the world. Such an altitude is very suitable for the growth of Arabica coffee. Strictly speaking, Yirgacheffe is a sub-region under Sidamo Province, located northwest of Sidamo, surrounded by mountains and water. However, because the coffee beans produced by this small town were simply too outstanding in flavor, it was later declared an independent region by the EXC.

In addition, according to Front Street's understanding, under the ECX system, the current Yirgacheffe area has been further divided into four sub-regions: Yirgacheffe, Worka, Kochere, and Genlena abay. This land has fertile soil, with an average altitude above 1,800 meters and a significant temperature difference between day and night. The different production methods of each sub-region, together with the local unique heirloom coffee gardens, make the flavor of each batch of coffee beans present a unique appearance.

Front Street finds the name of the Yirgacheffe producing region itself quite meaningful, in which "yirga" means to settle down, and "cheffe" refers to wetlands. Put together, it means "let us settle down and make a living in this wetland." Yirgacheffe Coffee Processing Methods

As Front Street Coffee mentioned above, Yirgacheffe coffee became famous because of the washed processing method. In the early days, Yirgacheffe, like other producing regions in Ethiopia, used the most traditional natural method, until 1972, when Ethiopia introduced washed processing technology from Central and South America in order to improve coffee quality. This change allowed the citrus-lemon aroma contained in Yirgacheffe coffee beans themselves to be fully released, and the taste also became fresher and brighter.

Because of this, Yirgacheffe quickly entered the ranks of the world's representative specialty coffees, and afterward this producing region was dominated by washed coffee beans. In the 21st century, natural processing technology continued to improve, and amazing natural beans also began to emerge in the specialty coffee market. At that time, a Yirgacheffe coffee trader named Baghissi, who missed the flavor of traditional natural coffee, set out to improve the natural process and launched many outstanding natural coffee beans, allowing natural beans to regain an important position in the Yirgacheffe producing region. For example, the Yirgacheffe Natural Red Cherry coffee beans in Front Street Coffee's shop are deeply loved by coffee-loving friends.

In other words, at present, Yirgacheffe coffee beans perform quite well whether they are washed or naturally processed. Next, Front Street will explain what exactly the differences are between these two processing methods.

Natural Processing Method

As Front Street Coffee stated earlier, the natural processing method is the oldest way of processing coffee beans, also called the "dry method." This processing method does not require much equipment and can be carried out as long as there are consecutive sunny days. The sun-drying process takes 27 to 30 days. Therefore, it is quite picky about climatic conditions and is more suitable for arid regions. For example, Ethiopia, which Front Street Coffee just mentioned, is itself a coffee-producing country that widely uses the natural processing method, because the country has high altitudes, a dry climate, and scarce water resources. The reason the Yirgacheffe producing region generally uses the washed processing method is precisely because the place itself is a wetland and is the area in Ethiopia with the most abundant water resources.

However, it should be noted that although natural processing is relatively simple to operate, precisely because of this, naturally processed coffee beans do not look attractive, and there will be some cracks on the surface, so they are not very pleasing to the eye.

Natural Processing Method Flow

1. The first step is to pick ripe coffee cherries, then use manual sorting to remove defective, overripe, or insect-damaged fruits, keeping high-quality beans. This is also one of the important reasons why the coffee beans in Front Street's shop look relatively uniform and attractive.

2. After manual sorting, the high-quality fruits are sent to drying sites for processing. Different producing regions use different drying facilities; some use tarpaulins, some use raised beds, and others use concrete floors. The average drying time is 27 to 30 days, until the coffee's moisture content drops to 11%, which is considered complete.

3. This step is also quite critical. The dried coffee cherries are sent to a specialized processing plant for peeling and hulling, and may even be polished. Only after the pulp and other parts are completely removed do we obtain green coffee beans in the commonly understood sense.

4. After hulling, the green coffee beans undergo another round of sorting to once again remove beans with poor appearance. This is because overly dried coffee beans are relatively brittle and easily break during hulling, while insufficiently dried coffee beans contain too much moisture, and overly active moisture can easily breed bacteria and cause mold. Therefore, they must be sorted again before being sent to the warehouse for storage and packaging for export.

Advantages and Disadvantages of Natural Processing

Advantages: As Front Street said earlier, the natural processing method is relatively simple to operate, which means it does not require very high costs. Therefore, natural coffee beans have an irreplaceable fermented flavor. Nowadays, coffee farmers have also begun to attach importance to the quality of natural coffee beans, for example by placing the beans on racks to dry and turning them frequently to prevent contamination. Precisely because of this, Front Street's shop can carry so many high-quality natural coffee beans.

Disadvantages: As Front Street also mentioned earlier, natural coffee beans have very strict requirements for weather conditions, and the degree of fruit drying is also difficult to control. Moreover, if the drying yard is not clean enough, impurities can easily mix in, leading to an increase in defective beans. During the drying process, because the coffee cherries are dried together with the pulp, mold and spoilage can easily occur. Fortunately, with technological development, in pursuit of higher-quality natural beans, coffee farmers have begun to rely on instruments and manpower to closely monitor the degree of fermentation and drying, and immediately remove anything abnormal. Of course, this kind of operation costs more, but it is also more meticulous, so it is also called refined natural processing.

Flavor Performance of Natural Coffee Beans

Because they are exposed to the sun for a long time, natural coffee beans have a more intense flavor and richer layering, with vinous fermented notes and relatively higher sweetness.

Washed Processing Method

The second common processing method is the washed processing method. Most of Front Street's coffee beans from different producing regions also use washed processing, especially Front Street's daily drinking beans. This is because washed coffee beans are cleaner and their flavor expression is more transparent, allowing them to reflect the most original taste of the coffee fruit. Therefore, Front Street also often says that the flavor of washed coffee beans is a guiding light for understanding the flavor of a producing region.

Washed Processing Method Flow

1. First, coffee farmers pour all the harvested coffee cherries into water. Defective beans will float to the surface, while the fruits that sink to the bottom are the ones that pass quality standards. This operation greatly saves the time consumed by selecting them one by one.

2. The selected fruits are put into a depulper to remove the outer skin and pulp. After removal, a layer of mucilage still remains on the surface of the coffee cherries, so a large amount of clean water is needed to wash off the sticky substances on the surface.

3. Then fermentation is used to completely remove the mucilage. This process takes about 18 hours. After fermentation is complete, fermentation bacteria will adhere to the surface of the coffee cherries, so they need to be washed again with a large amount of clean water. For this step alone, every 1 kilogram of coffee beans obtained requires 40 to 50 kilograms of clean water. Front Street thinks this is a very large number, and this is precisely why arid countries cannot adopt washed processing.

4. The cleaned coffee beans can then be dried. Some regions will directly take them outdoors to dry, while more developed producing regions will send them to processing plants for machine drying, reducing the coffee's moisture content to about 11%.

5. Finally, the dried coffee beans are stored and packaged, and can then be sold for export.

Advantages and Disadvantages of the Washed Processing Method

Advantages: Coffee beans washed with a large amount of clean water have fewer impurities and a relatively intact appearance. In addition, because the outer skin and pulp of the coffee cherries are removed by washing from the very beginning, there is no need to worry about mold, and the overall quality is also relatively stable.

Disadvantages: The washed processing method has a relatively complex and cumbersome process and requires a large amount of water, so the cost is relatively high, and it is less used in areas with scarce water resources.

Flavor Performance of Washed Coffee Beans

As Front Street said earlier, washed coffee beans have a cleaner and more transparent flavor, with acidity and fruity notes, a bright mouthfeel, and relatively lower sweetness and body.

Differences Between Washed and Natural Coffee Beans

The most essential difference between the natural processing method and the washed processing method is that natural processing retains the flavor of the pulp, while washed processing removes the pulp flavor and represents the most essential taste of the coffee bean. A clear difference can be felt in the mouthfeel: washed is cleaner and more transparent, while natural is richer in mouthfeel. Precisely because the washed method can reflect the most essential flavor of coffee beans, whenever Front Street Coffee recommends coffee beans, if the customer is tasting coffee beans from that producing region for the first time, Front Street Coffee will give priority to recommending washed coffee beans, so that people can more clearly understand the flavor characteristics of that producing region.

The above is Front Street Coffee's summary of the differences and characteristics between washed and natural processing of Yirgacheffe coffee beans. Next, Front Street Coffee will compare the flavor differences between Yirgacheffe Natural Red Cherry coffee beans and Yirgacheffe Washed Gutingding coffee beans.

Front Street Coffee: Ethiopian Washed Gutingding Coffee Beans

Country: Ethiopia Producing Region: Yirgacheffe Altitude: 1900-2300m Variety: Local heirloom Processing Method: Washed Flavor: Tropical fruits, cream, honey, berries, citrus

According to Front Street's understanding, the Gutingding Cooperative was originally part of the Worka Cooperative under the Yirgacheffe Coffee Farmers Cooperative Union YCFCU. In 2012, it became independent as the Gutingding Cooperative and currently has more than 300 smallholder members. At the same time, precisely because Gutingding Village was the earliest village area to become independent, and many small farmers were also members of the original Worka Cooperative, their production technology is excellent, and the coffee beans they produce naturally have an excellent flavor.

Front Street Coffee: Ethiopian Yirgacheffe Natural Red Cherry

Country: Ethiopia Producing Region: Yirgacheffe Altitude: 2300m Variety: Local heirloom Processing Method: Natural Flavor: Berries, lemon, strawberry, fermented vinous aroma

This Front Street Coffee Natural Red Cherry coffee bean is made by naturally processing 100% ripe coffee cherries, so it is full of aroma, rich in sweetness, and carries a fermented quality.

This coffee bean originates from the "Red Cherry Project" jointly initiated by local Ethiopian coffee farmers and the Dutch trader Trabocca, aiming to improve the coffee quality of small-scale farms and increase farmers' income. The fully ripe coffee cherries are picked, requiring not only fully red and high ripeness but also entirely hand-picked. However, this is only the most basic requirement; there are also corresponding standards for coffee bean processing.

Next, Front Street Coffee will share the differences in flavor between these two Yirgacheffe coffee beans, one natural and one washed, in roasting and brewing.

Front Street Coffee Roasting Data Sharing

Natural Red Cherry : Before roasting, Front Street Coffee conducts two rounds of manual sorting to remove defective beans. Hand sorting before roasting lays the foundation for roasting high-quality coffee. This Natural Red Cherry coffee has extremely few defects.

Using a Yangjia 800N, with 600g bean charge: charge when the drum temperature reaches 200°C, set the damper to 3.5, after 1 minute adjust the heat to 160°C, keep the damper unchanged, adjust the heat once at 148°C, lower it to 130°C, roast until 5'03'', at 151°C, when the bean surface turns yellow, the grassy smell completely disappears, dehydration is complete, adjust the heat to 105°C, open the damper to 4; at the 8th minute, ugly wrinkles and dark spots appear on the bean surface, and the toast smell clearly turns into coffee aroma, which can be defined as the prelude to first crack. At this time, listen clearly for the sound of the first crack point. At 9'07'' first crack begins, reduce the heat to 70°C, open the damper fully (adjusting the heat must be very careful, not so low that there is no cracking sound), and drop at 194°C.

Washed Gutingding: Front Street's roaster considered that this Gutingding bean has fruity acidity as its main representative flavor and is more suitable for a light roast profile, which will highlight Gutingding's clean mouthfeel, bright fruity acidity, and obvious sweet aftertaste.

Using a Yangjia 800N, bean charge: 480g: charge when the drum temperature reaches 175°C, set the damper to 3, heat at 120; turning point at 1'32", when the drum temperature is 140°C keep the heat unchanged, open the damper to 4; at this time the bean surface turns yellow, the grassy smell completely disappears, entering the dehydration stage, at 166°C lower the heat to 100, at 176°C lower the heat to 80, keep the damper unchanged. At 8'28", ugly wrinkles and dark spots appear on the bean surface, and the toast smell clearly turns into coffee aroma, which can be defined as the prelude to first crack. At this time, listen clearly for the sound of the first crack point. At 9'38" first crack begins, adjust the damper to 5 (adjusting the heat must be very careful, not so low that there is no cracking sound), develop for 1'30'' after first crack, and drop at 193.5°C.

Front Street Coffee Brewing Data Sharing

Dripper: V60 #01 Water Temperature: 90-91°C Dose: 15g Coffee-to-Water Ratio: 1:15 Grind Size: BG6m / medium-fine grind (80% passing through a No. 20 sieve)

Brewing Method: Three-Pour Extraction

In the first pour, add 30 grams of water for a 30-second bloom, then pour in 95 grams (about 125 grams on the electronic scale), finishing the pour in about 1 minute. When the water level drops to 2/3 of the coffee bed, pour in the remaining 100 grams (about 225 grams on the electronic scale), finishing the pour in about 1 minute 35 seconds. Dripping is completed at 2'00''-2'10", remove the dripper, and extraction is complete.

Natural Red Cherry Brewed Flavor: Lemon, licorice, citrus, berries, sweet orange. The overall sweetness is relatively high, with caramel and cream in the sweet aftertaste, and a black tea aroma in the finish.

Washed Gutingding Brewed Flavor: On the palate there are citrus and black tea; as the temperature changes, there are cream, caramel, and almond notes, with an obvious sweet aftertaste and a clean, refreshingly sweet mouthfeel.

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