Why Is Kenya Coffee So Bright and Intense?

Kenyan coffee is known for bright, intense acidity often described as cherry tomato and prune, which sets it apart from the citrus-lemon character of Ethiopian coffee. The flavor comes from high-altitude growing conditions around 1,500 meters, varieties such as SL28, SL34, Ruiru11 and Batian, and the K72 washed processing method.

Kenya's green bean grading system uses letters including AA, AB and PB, which indicate screen size rather than cup quality, so coffee bean grades alone do not predict flavor. Starbucks has sold a Kenya coffee since 1971, packaged with an elephant motif, usually medium roast and double washed. A V60 with adjusted water temperature, ratio and staged pours suits Kenya AA.

Kenyan coffee is renowned for its bright, intense acidity, often described as having flavors of cherry tomatoes and prunes, which stands in sharp contrast to the citrus notes of Ethiopian coffee. From the perspective of Front Street Coffee (FrontStreet Coffee), this article systematically reviews the growing conditions of Kenya's coffee regions, the main varieties (SL28, SL34, Ruiru11, Batian), the distinctive K72 washed processing method, and the practical meanings of grades such as AA, AB, and PB in Kenya's green bean grading system. At the same time, the article also shares the roasting parameters of two Kenyan beans in Front Street Coffee's shop, and provides specific water temperature, coffee-to-water ratio, grind size, and staged extraction techniques for brewing Kenya AA in a V60 dripper, helping coffee enthusiasts gain a more comprehensive understanding of the flavor sources and brewing key points of Kenyan coffee.

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Have you ever noticed the Kenyan coffee offered by Starbucks? This coffee comes from Kenya, Africa, is processed using the double washed method, is usually grown at an altitude of around 1,500 meters, has a medium roast level, and is priced at about 85 yuan for 250 grams.

People trying Kenyan coffee for the first time are often moved by its unique flavor. That kind of acidity reminiscent of cherry tomatoes and prunes is very distinctive, and the quality is also excellent. Starbucks also has a Kenya coffee from Kenya, so what exactly are its characteristics? Below, Front Street Coffee (FrontStreet Coffee) will discuss them one by one.

The background story of Starbucks Kenya coffee

As is well known, Kenya is located in Africa, and when people think of Africa, what often comes to mind first are the vast savannahs and herds of elephants. For this reason, the packaging of Starbucks Kenya coffee is printed with the highly representative African elephant pattern. This Kenya coffee was also launched quite long ago, first appearing in 1971, and the elephant on the packaging has long become an iconic symbol of Kenyan coffee.

Therefore, many people also like to use the African elephant to describe the flavor of Kenyan coffee beans—a powerful and full-bodied acidity, completely different from the citrus-lemon style acidity of Ethiopia. This is also one of the reasons why Kenyan coffee can stand alongside Ethiopia's Yirgacheffe as a representative of African coffee. Next, Front Street Coffee (FrontStreet Coffee) will share exactly what factors create such excellent flavor in Kenyan coffee.

Growing conditions in Kenya's coffee regions

Front Street Coffee (FrontStreet Coffee) has mentioned many times in previous articles that the flavor performance of a coffee bean mainly depends on the growing conditions of the region, the coffee bean variety, and the processing method. Among these, the region and variety are the innate conditions that determine flavor, while the processing method is the means of elevating the flavor. Below, we will analyze the formation of Kenyan coffee's flavor characteristics from these three aspects.

Kenya is located in eastern Africa, with the equator crossing its center and the East African Rift Valley running through it from north to south. It borders Somalia to the east, Tanzania to the south, Uganda to the west, Ethiopia and Sudan to the north, and faces the Indian Ocean to the southeast. The country is mainly composed of plateaus, with an average altitude of about 1,500 meters. Mount Kirinyaga (Mount Kenya) in the center has an altitude of 5,199 meters, with snow on its summit year-round, and is the second-highest peak in Africa. The equator passes through Kenya, and the country lies exactly within 10 degrees north and south latitude, making it a tropical production area with two rainy seasons each year, allowing two harvests, of which 60% is concentrated from October to December and the other 40% from June to August.

According to Front Street Coffee (FrontStreet Coffee), Kenyan coffee is mostly grown in the fertile, loose, acidic volcanic red soil of the highlands north and east of Nairobi. There is abundant sunlight, good drainage, and the altitude ranges between 1,400 and 2,000 meters. The higher the altitude, the greater the temperature difference between day and night, and the maturation cycle of Kenyan coffee is longer than in low-altitude regions, resulting in higher density and a more intense taste.

From the above, it can be seen that Kenya's coffee-producing regions are indeed very suitable for growing coffee beans. With such exceptional conditions, the coffee beans produced are naturally of high quality. The main variety grown in Kenya is Arabica, and Arabica is praised as one of the highest-quality coffee varieties in the world. Its characteristic is that the higher the growing altitude, the richer the acidity, which is also one of the reasons why the acidity of Kenyan coffee is so pleasant.

Kenyan coffee varieties

In Kenya, common varieties include SL28, SL34, Batian, and Ruiru11. These varieties were all independently developed by the Kenyan coffee laboratory, which shows the Kenyan government's emphasis on the coffee-growing industry, and this is also why the acidity of Kenyan coffee differs from that of neighboring countries' coffee.

SL28

According to historical records, a senior coffee official at the Scott Laboratories (A.D. Trench) once noticed that a variety growing in the Mod region of Tanzania seemed tolerant to drought, disease, and pests. Seeds were collected and brought back to the Scott Laboratories, where their drought resistance was verified.

Genetic testing in recent years has also confirmed that SL28 belongs to the Bourbon genetic group, so SL28 coffee beans have a shape close to the Bourbon variety, round and plump. Through the SL28 variety, Front Street has found that its flavor profile shows complex and varied acidity as well as excellent sweetness.

SL34

SL34 was originally selected from the "French Mission" (Bourbon) at the Loresho estate in Kabit. However, according to information reviewed by Front Street Coffee (FrontStreet Coffee), genetic testing of this variety has now confirmed that it contains the Typica genetic group, and its plant performance characteristics are also similar to Typica, so it is believed that the selection of SL34 originated from Typica. Because it is close to the Typica variety, SL34 beans are slender, oval-shaped, and appear somewhat flat from the side.

Ruiru11

Ruiru appeared after SL28 and SL34. According to Front Street's understanding, in the 1970s, the Ruiru station began trying to breed different CBD- and rust-resistant varieties, and the final result was Ruiru11, released in the 1980s. It has high yield and possesses CBD and rust resistance, and at one point seemed to become the solution to all of Kenya's coffee production problems.

Batian

The Batian variety was released by the Coffee Research Institute (CRI) on September 8, 2010, and is the newest variety offered by Kenya. It was obtained through further experimentation based on the lessons learned from Ruiru11. Genetically, it is essentially selected from backcrosses of SL28 and SL34, and is closer to SL28 than Ruiru11. This also eliminates the problematic Robusta variety coffee bean elements, thereby improving cup quality.

Kenyan coffee processing method—K72 washed processing method

In addition, Kenya is also unique in its handling of green coffee beans, using a processing method independently developed in the country: the K72 washed processing method. The process of this method is: after washing and depulping fully ripe coffee cherries, dry ferment for twenty-four hours, wash, dry ferment again for twenty-four hours, wash, and dry ferment again for twenty-four hours, cycling in this way to achieve a strong fermentation effect of seventy-two hours. After washing, the beans are soaked in a clean tank overnight, and early the next morning drying work begins on the sun-drying patio. Because the fermentation time is as long as 72 hours, it is called K72.

Kenyan coffee bean grading system

From the description above by Front Street Coffee (FrontStreet Coffee), coffee lovers can learn that Kenya places great importance on coffee, and precisely because of this, Kenya has very high pursuit of coffee quality, and therefore has also implemented a coffee bean grading system. For example, AA-grade coffee beans have the highest quality. Although there is a "grading" system, is AA grade necessarily tastier than AB grade? So what exactly is the grading system based on?

According to Front Street Coffee (FrontStreet Coffee), Kenya's coffee bean grading standard is mainly based on size, and the difference between AA and AB is only a difference in size. As for whether it tastes good, Front Street Coffee (FrontStreet Coffee) has reached a conclusion through cupping: whether Kenyan coffee beans are AA or AB grade, they are all very delicious coffees. The differences in taste among different production regions may come more from factors such as region, altitude, and growing conditions. But AA and AB grade Kenyan coffee are certainly coffees with the most guaranteed quality.

From the above, these grades are merely distinctions in bean size. And the most famous processing method for Kenyan coffee beans is none other than the K72 washed processing method, so Kenya's highest-quality coffee beans are basically washed. Washed processed coffee is roughly divided into eight grades:

E: Elephant Bean, also known as Elephant ear, flat beans with a screen size above 19. AA: Screen size 17 to 18

AB: Screen size 15 to 16, accounting for the majority of production TT: Lighter-weight beans blown out from AA and AB grade beans by an airflow separator C: Screen Size smaller than AB / below 14, too small in size to be classified as specialty grade. T: Lighter-weight beans blown out from C grade beans (below 14) by an airflow separator, that is, both size and density are too small to be classified as specialty grade.

PB: Peaberry, meaning round bean, classified not by size but by appearance, unrelated to flavor or weight, accounting for about 10% of total production UG: Those not meeting the above standards

Second, there are also lower-quality sun-dried coffee bean grades, which are not subjected to Kenyan-style washed processing because of their poorer quality and are generally supplied to Kenya's domestic market. This bean grade is called M'buni.

In addition, one point Front Street Coffee (FrontStreet Coffee) wants to emphasize is that this "green bean grading system" standard still in use today was issued by a government department in 1938, even 40 years earlier than the birth of the concept of "specialty coffee." Therefore, Kenya today has long had new concepts for coffee bean grading standards, but the size-based grading standard is still relatively common at present.

The following is Kenya's current new coffee grading standard:

According to Front Street Coffee (FrontStreet Coffee), when assessing coffee quality, Kenyan coffee research institutions and the local industry commonly use a coffee bean quality grading procedure formulated by the Kenyan coffee research institution, comprehensively grading based on three aspects: green bean quality, roasted bean quality, and cupping quality.

Green bean quality: the judging items are further divided into green bean appearance and size, green bean color, and defects. Roasted bean quality: subdivided into center crack condition, roasted bean condition, and defective beans. Cupping quality: scoring is based on acidity, body/texture, flavor, and negative defects.

Combining the scores from the three aspects, coffee beans are divided into grades 1 to 10, with grade 1 being the best and grade 10 the worst.

From the above, it can be seen that the difference between AA-grade coffee beans and AB-grade and PB-grade coffee beans lies only in size. But in general, coffee beans with a larger screen size also have a lower defect rate, so their flavor is naturally cleaner, and the price is also higher.

The above is the relevant information on Kenyan coffee beans compiled by Front Street Coffee (FrontStreet Coffee). Front Street Coffee (FrontStreet Coffee) has also introduced one Kenya AA-grade coffee bean and one PB-grade coffee bean, which are shared below.

Front Street Coffee (FrontStreet Coffee) Kenya Little Tomato coffee beans

Country: Kenya Region: Asali (Honey Processing Station) Altitude: 1550-1750m Variety: SL28, SL34 Processing method: 72-hour washed processing Flavor: snow pear, smoked plum, yellow sugar, cherry tomato, plum

Front Street Coffee (FrontStreet Coffee) roasting parameter sharing

Kenya Asalia coffee beans: These beans are plump and round. In order to fully express their bright and mellow acidity, Front Street Coffee (FrontStreet Coffee) adopted a light roast level.

Yangjia 800N semi-direct fire, bean charge 480g: charge when the furnace temperature reaches 160°C, set the damper to 3, and the heat to 120. Turning point: 1'28". When the temperature rises to 130°C, set the damper to 4. Roast until 6'00'', temperature 154.6°C, the bean surface turns yellow, the grassy smell completely disappears, and dehydration is complete. When ugly wrinkles and dark spots appear on the bean surface, and the toast smell clearly turns into coffee aroma, this can be defined as the prelude to first crack. At this time, listen carefully for the sound of the first crack point. At 9'28'', first crack begins, the damper remains unchanged, first crack development time is 2'20'', and the beans are dropped at 193.8°C.

Front Street Coffee (FrontStreet Coffee) brewing suggestions

Dripper: V60 or cake cup Water temperature: 91-92°C Coffee-to-water ratio: 1:15 Grind size: fine grind (80% passing through China standard No. 20 sieve)

Brewing method: staged extraction. Use 30 grams of water for a 30-second bloom, pour in a small stream in a circular motion until 124 grams, then pause for a stage; when the water level drops and is about to expose the coffee bed, continue pouring until 228 grams and stop pouring; when the water level drops and is about to expose the coffee bed, remove the dripper, (start timing from the beginning of the bloom) extraction time is 1'55".

Asalia coffee bean flavor: The wet aroma has ripe tomato and floral notes; on the palate there are flavors of cherry tomato and smoked plum, with bright acidity, a clean and rich mouthfeel, a prominent sweetness in the middle, a juicy feel, and a finish of berry aroma and yellow sugar sweetness, along with green tea aroma.

Sasini coffee bean flavor: It smells floral, and on the palate there is acidity of cherry tomato, citrus, and nuts, with a creamy aroma in the middle, brown sugar sweetness returning, and a finish of cocoa and oolong tea tea-like notes. The flavor layers are relatively rich, with obvious floral notes.

The above are the flavor characteristics of these two coffee beans in Front Street Coffee's shop. We hope this can help everyone gain a deeper understanding of knowledge related to Kenyan coffee, so that in the future when choosing coffee beans from different regions, you can avoid pitfalls.

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