Washed Yirgacheffe Kochere Coffee Bean Flavor Profile & Yirgacheffe Brewing Methods

Ethiopian coffee beans are highly favored by coffee enthusiasts for their complex and varied flavors, which result from the extremely diverse ancient native varieties and multiple processing methods such as natural and washed. When it comes to Ethiopian coffee beans, many people are accustomed to referring to them as Yirgacheffe. Indeed, Yirgacheffe's fresh and clean coffee flavor has been the gateway coffee that has introduced many enthusiasts to the world of coffee. Washed-processed Yirgacheffe coffee is clean and refreshing with bright acidity, while natural-processed Yirgacheffe coffee is clean and smooth with a hint of fermented sweetness. When friends come to FrontStreet Coffee unsure of what coffee to try, the barista at FrontStreet Coffee will start with coffee beans from the Yirgacheffe region. In this article, FrontStreet Coffee will discuss washed-processed Yirgacheffe coffee beans.

Yirgacheffe is a Small Town

Yirgacheffe is located on the eastern edge of the East African Rift Valley, with complex topographical divisions and an altitude of 1800-2000m. To the west lies Lake Abaya, which has been a wetland since ancient times with abundant water sources, providing excellent resources for Yirgacheffe's washing stations. Yirgacheffe is part of the Sidamo region but has been separated due to its unique flavor profile. Besides Yirgacheffe town, the surrounding area includes sub-regions such as Wenago and Kochere.

FrontStreet Coffee believes that what is known as "Yirgacheffe flavor" refers to rich citrus and lemon acidity, intense jasmine aroma, light and elegant mouthfeel with tea-like notes, tasting like refreshing and clean lemon tea. Traditional Yirgacheffe coffee beans used natural processing, but early natural-processed coffee beans were often dried directly on the ground, inevitably picking up earthy flavors, dust, and other undesirable flavors. Additionally, due to lack of proper screening, the quality of natural-processed beans was generally average. In 1972, Ethiopia introduced washing technology from Central and South America to improve coffee quality, which made the jasmine fragrance and citrus-lemon aroma of Yirgacheffe coffee beans clearer and brighter, elevating it to become one of the representatives of world specialty coffee.

Washed Processing Method

The washed method removes impurities (stones or debris) and defective beans through each step, resulting in uniform appearance of green beans, which is generally considered high quality and commands higher prices than natural-processed coffee beans. However, the more detailed the process division, the more procedures required for operation and hygiene management, increasing risks, so washed processing does not necessarily equal high quality. The biggest disadvantage of washed coffee is that during fermentation, coffee beans are easily tainted by fermentation odors. Some coffee experts point out that one fermented bean can ruin 50 grams of beans. Beans get tainted with fermentation odor mostly due to lack of proper management and maintenance of fermentation tanks. Coffee beans with mucilage still attached to the parchment can be soaked in fermentation tanks overnight to remove the mucilage. However, if the microorganisms in the fermentation tank change, it can cause the coffee beans to be tainted with fermentation odor.

The Washed Process Steps

Bean Selection: Harvested fruits are placed in water-filled tanks and soaked for about 24 hours. During this time, mature fruits will sink, while unripe and overripe fruits will float and can be removed.

Pulping: Machines are used to remove the skin and pulp, leaving only coffee beans wrapped in parchment. At this point, the beans still have a layer of mucilage on the outside, and the washing process is designed to clean this mucilage.

Fermentation: The mucilage has strong adhesion and is not easy to remove. It must be placed in tanks for about 18-36 hours to ferment and decompose the mucilage. There are two fermentation methods: wet fermentation and dry fermentation. As the names suggest, the former involves adding water, while the latter does not.

During the fermentation process, the seeds and internal pulp undergo special changes, which is the step in the washed method that most significantly affects coffee flavor. Some farms add hot water or enzymes to speed up fermentation, which negatively impacts coffee bean quality and is not welcomed by specialty coffee enthusiasts.

Washing: Farms using the washed method must build washing tanks and have access to a continuous supply of fresh water. During processing, the fermented beans are placed in the tanks and moved back and forth, using the friction between beans and the power of flowing water to wash the coffee beans until they are smooth and clean.

Drying: After washing, the coffee beans are still inside the parchment with a moisture content of 50%. They must be dried to reduce the moisture content to 12%, otherwise they will continue to ferment and become moldy and spoiled. The better processing method is sun-drying, which takes 1-3 weeks but produces exceptional flavor and is quite popular. Additionally, some places use machine drying, which significantly reduces processing time but results in inferior flavor compared to sun-dried coffee.

Hulling: After drying is complete, the beans can be stored in warehouses or sent to factories for hulling to remove the parchment and silver skin.

FrontStreet Coffee, considering that washed processing better reflects the clean mouthfeel and pure flavor presentation of coffee, uses washed beans from specific coffee growing regions as reference when analyzing their specific flavors. For beginners who haven't tried Yirgacheffe, FrontStreet Coffee will first recommend FrontStreet Coffee's washed Yirgacheffe, which helps form an understanding of the regional flavor. Later, when trying Yirgacheffe with other processing methods such as natural and honey, they will have a direction for comparison.

Yirgacheffe Washed Coffee Bean Grading

Before the establishment of the Ethiopia Commodity Exchange (ECX), Ethiopian coffee export grades were set by the CLU (Cupping and Liquoring Unit) under the Ministry of Agriculture, primarily based on the number of defective beans in 300g samples. The grading standards are as follows in the table below.

Generally, washed-processed beans are graded G1-G2. Due to technical issues with natural processing at that time, natural-processed beans had more defects and were generally graded G3-G5. With improvements in natural processing technology, current natural-processed beans can also achieve G1-G2 grades.

FrontStreet Coffee's washed Yirgacheffe coffee beans include FrontStreet Coffee Yirgacheffe Gedeb Cooperative, FrontStreet Coffee Yirgacheffe Kochere, and FrontStreet Coffee Washed Yirgacheffe Daily Bean.

FrontStreet Coffee · Ethiopia Yirgacheffe Gedeb Cooperative Coffee Beans

Region: Yirgacheffe, Gedeo Zone

Altitude: 1900-2300m

Variety: Heirloom

Processing: Washed processing method

FrontStreet Coffee · Ethiopia Washed Yirgacheffe Daily Bean

Altitude: 1800-2000 meters

Variety: Local heirloom varieties

Processing: Washed processing method

Many friends unfamiliar with FrontStreet Coffee might have misconceptions about FrontStreet Coffee's Daily Bean series, possibly thinking that the term "Daily Bean" is just to satisfy the curiosity about coffee beans for those who don't know coffee well. Sometimes large online discounts might make people worry about whether FrontStreet Coffee's beans are of poor quality or have messy flavors. FrontStreet Coffee's Daily Bean series is actually the "face" of coffee beans from major producing regions - the Daily Bean's regional basic flavors have higher recognition, while also being affordable, high-value coffee beans. FrontStreet Coffee launched the Frontsteet Daily Bean series to allow all enthusiasts to experience the most representative coffee flavors of each region at the lowest possible price.

How Does FrontStreet Coffee Brew FrontStreet Coffee's Washed Yirgacheffe Coffee Beans?

FrontStreet Coffee's roasters use medium-light roast to preserve the bright citrus acidity and floral characteristics of FrontStreet Coffee's washed Yirgacheffe coffee. For brewing medium-light roast beans, we recommend 90-91°C water temperature. Higher water temperatures can extract aromatic compounds and acidity from light-roast beans. Because medium-light roast beans have harder density, increasing water temperature can improve extraction efficiency and avoid sharp acidity. The V60 conical filter has a larger opening and unique spiral ribbing that allows air to escape more easily, thereby improving extraction quality. The mouthfeel might not be as full-bodied, but its high concentration of sweet and sour flavors with distinct aroma is one of its major characteristics.

Brewing Parameters

Filter: V60

Water Temperature: 90-91°C

Coffee Dose: 15g

Coffee-to-Water Ratio: 1:15

Grind Size: Fine sugar size (80% passes through #20 sieve)

FrontStreet Coffee Brewing Method: First, pour 30g of water for a 30-second bloom. Then pour 95g more (scale shows around 125g), completing the pour in about 1 minute. When the water level drops to 2/3 of the coffee bed, pour the remaining 100g (scale shows around 225g), completing the pour in about 1 minute and 35 seconds. The drip completes at 2'04", remove the filter, and extraction is complete.

Brewing Flavor Profiles

FrontStreet Coffee Yirgacheffe Kochere Coffee: Initial notes of lemon, plum, and Tieguanyin oolong tea, with distinct caramel notes as temperature changes, bright acidity, and noticeable aftertaste.

FrontStreet Coffee Yirgacheffe Gedeb Cooperative Coffee: Initial notes of citrus and black tea, with cream, caramel, and almond notes as temperature changes, with noticeable sweet aftertaste and clean, sweet mouthfeel.

FrontStreet Coffee Washed Yirgacheffe Coffee: Jasmine aroma, berry juice notes, lemon and citrus acidity, overall bright, clean, and refreshing.

Important Notice :

前街咖啡 FrontStreet Coffee has moved to new addredd:

FrontStreet Coffee Address: 315,Donghua East Road,GuangZhou

Tel:020 38364473