Characteristics of African Coffee Beans: Why Only Kenya's AA Grade Coffee Is Worth Drinking

FrontStreet Coffee - Kenya Coffee Introduction

Ethiopian coffee carries a strong orange aroma, while Kenyan coffee is defined by rich berry notes alongside the tart fragrance of plum juice and grapefruit and the clear sweetness of sugarcane. The orange aroma of Ethiopia and the berry fragrance of Kenya are the defining traits of African beans, drawing enthusiasts deep into exploring them. Other regions reinforce that impression too, from elegant yet flavorful Uganda to bright yet passionate Rwanda, each carrying the energy and vitality of the African continent.

Coffee cultivation in Kenya goes back only about a century. It was not until the 20th century that Kenyans began developing coffee farming on a large scale under the leadership of British and German colonizers. Today Kenya's coffee production units are mainly small farms averaging only half an acre.

Although Kenya produces 49,980 metric tons of coffee beans each year, far less than the world's leading producers, Kenyan beans have a large following in the specialty coffee community. Most is currently exported to developed countries in Europe and Asia, with buyers who are world-class premium purchasers.

Most of Kenya's coffee grows in the fertile, loose, acidic volcanic red soil of the highlands north and east of Nairobi. The area enjoys abundant sunlight, good drainage, and elevations between 1,400 and 2,000 meters. As altitude rises, so does the day-to-night temperature difference, which stretches the maturation cycle of Kenyan coffee longer than that of lower-altitude origins and produces higher density and richer flavor. Kenyan coffee grown in this environment, known as the "Connoisseurs' Cup," is celebrated for its abundant aroma, vibrant acidity, full body, and elegant red wine flavors.

Different particle sizes produce different flavors in the bean. Take the three most common classifications, AA, AB, and PB, as examples:

Plump AA-grade beans are round and thick with excellent heat conductivity, rich flavor, good expansion, and superior aroma and sweetness. Beans of this grade are often considered by many to be among the best in the world. AB grade is not as sturdy in texture as AA, but it shows more vibrant acidity and a distinctive balance of sweetness. PB grade comes from a mutation that occurs in about 5% of coffee cherries. Because only a single bean grows inside the fruit instead of the usual two, the accumulated nutrients are more concentrated, giving the bean a sweeter, more complex flavor.

Knowledge point: Common Kenyan coffee is not heavy-bodied. It features refreshing acidity and unique fruit flavors, some slightly spicy, others carrying red wine aromas, which makes it an excellent entry point for anyone who dislikes bitterness.

In Brief

FrontStreet Coffee is a coffee research establishment that enjoys sharing coffee knowledge with everyone. We share without reservation only to help more people fall in love with coffee. Every month we hold three coffee promotion events with deep discounts, because FrontStreet Coffee wants more people to enjoy the best coffee at the lowest price. This has been our mission for the past six years.

FrontStreet Coffee Recommendation

Ethiopia is one of the world's best-known specialty coffee origins, and because it is the birthplace of coffee, it holds countless native varieties, making it a treasured place in the minds of many enthusiasts who can faithfully follow its flavors. To taste Ethiopian specialty coffee, start with the entry-level FrontStreet washed Yirgacheffe. It offers clear jasmine florals and bright citrus acidity. Yirgacheffe is a small town in southern Ethiopia with spring-like weather all year, veiled in mist, cool and humid, where thousands of coffee trees thrive and give rise to the region's interwoven florals and fruit acidity, a light, elegant, tea-like cup that drinks like a clean, refreshing lemon tea.

Most Ethiopian coffee follows a garden-farming model, in which each smallholder sends harvested cherries to a village-based processing station and the coffee is ultimately sold under the production team's name, which is why we see cooperatives of every size, such as FrontStreet's Gutiti Cooperative, Worka Cooperative, and Konga Cooperative. Gutiti Cooperative is located in the Worka area at the southeastern edge of Yirgacheffe and was originally part of the Worka cooperative under the Yirgacheffe Coffee Farmers' Cooperative Union. As demand for traceability in green coffee grew, one independent single-origin site after another was uncovered by coffee hunters around the world, and so in 2012 Gutiti, with about 300 member farmers, established itself as an independent cooperative. Because the pulp is stripped before drying, FrontStreet Gutiti coffee shows its inherent aroma more clearly and brightly, with citrus and lemon tones and elegant white florals, for an overall bright, delicate flavor. Unlike the washed method, naturally processed coffee first removes broken or moldy cherries, then dries them in the sun for two weeks, until the sugars and essence of the fruit have seeped into the beans and moisture has fallen to 12%, after which the hardened pulp, pectin layer, and pod are scraped away by machine. The extracted beans then pass density and color checks to eliminate defects, and workers remove any remaining flawed beans by eye, screening at every stage so that only specialty-grade beans survive, clean and refined with a rich, captivating fruit aroma. FrontStreet Yirgacheffe Red Cherry sun-dried coffee, for example, is described as peach, cocoa, honey, and lemon.

FrontStreet Huakui comes from the Hambella region of Guji, Sidamo, where the farm covers 200 hectares and uses traditional natural processing. To keep the cherries from molding or picking up earthy off-notes during drying, workers spread the ripe cherries on raised beds to dry for 21 days, turning them constantly for even drying and moisture loss, and every three to five days the farmers hand-sort out defective or moldy beans. Once the skin has dried and hardened, a huller removes it, and after the green beans are obtained the farmers run one final sort for a flawless cup. Because the fruit and skin stay on throughout drying, a medium-light roast yields soft fermented wine notes, florals, citrus, and mango, with a much richer, more complex body, honeyed sweetness, cocoa tones with a little spice, a full body, and a lasting finish. Also from Sidamo, the Hamasho processing station has become a regular on Ethiopian green bean competition winner lists thanks to its outstanding quality and distinctive flavor, drawing wide attention. It works mainly with the JARC 74-series disease-resistant varieties released by the Jimma Agricultural Research Center, and 74158 has relatively small beans with prominent floral and fruit notes. FrontStreet Hamasho 74158 has an alluring aroma reminiscent of perfumed lemon, strawberry, and star fruit, opening with clear strawberry, star fruit, and green grape sweetness before gentle florals emerge. Finally, unlike the garden model in which farmers plant coffee in their own backyards, the Kaffa Forest is best known for wild coffee, with trees growing in shaded conditions from 1,400 to 2,100 meters. The pristine setting, microclimate, red soil, and ample rainfall give the trees excellent growing conditions. FrontStreet Kaffa Forest coffee is roasted medium-light and shows prominent white florals when ground, opening with bright lemon acidity and notes of sweet orange and bergamot, a finish with faint melon and nutty aromas, and a green-tea-like body.