Introduction:Gain an in-depth understanding of the six classic Arabica coffee varieties—from bean shape and appearance to pour over flavor profiles—and explore the unique characteristics of Typica, Bourbon, Caturra, Catuai, Geisha, and SL28/SL34. Learn about each variety’s regional traits, processing methods, and optimal brewing parameters to help you select the coffee beans that best suit your taste.
The Arabica coffee family boasts a wide range of varieties, each with its own distinctiveness in bean shape, flavor profile, and suitability for brewing. This article will take an in-depth look at six widely popular Arabica varieties—Typica, Bourbon, Caturra, Catuai, Geisha, as well as SL28 and SL34—providing a comprehensive analysis from their green bean appearance, regional distribution, processing methods, to pour over flavor characteristics. This will equip coffee enthusiasts with more direction when selecting beans and brewing.
Typica (Typica)One of the most classic original Arabica varieties, its green beans are slender and oval-shaped, appearing relatively thin when viewed from the side, with an overall appearance similar to standard long beans. Regardless of the altitude at which it is grown, the thickness of Typica beans remains relatively consistent, allowing it to maintain a certain degree of flavor consistency across different regions. In cupping, Typica often exhibits traits of freshness, cleanliness, and layered complexity, with soft acidity and balanced sweetness, making it ideal for drinkers who prefer a delicate mouthfeel. Common producing regions include Jamaica Blue Mountain, Papua New Guinea, and Yunnan small-seed varieties.
Take Jamaica Blue Mountain No.1 as an example—it is produced at the Clifton Estate in the Blue Mountain region, grown at an altitude of about 1310 meters, and processed using the washed method. After pour over brewing, it presents bright notes of dark chocolate and nuts, with well-balanced acidity, sweetness, and bitterness, and moderate body, making it a classic high-altitude representative of Typica.
Bourbon (Bourbon)This variety has a rounder appearance and generally smaller beans, although selected Bourbon cultivars in recent years have noticeably larger and thicker beans. When viewed from the side, Bourbon green beans grown at lower altitudes tend to be slightly thinner than those from higher altitudes. The aroma profile of Bourbon is usually outstanding, with bright acidity and sometimes complex tones reminiscent of red wine, leaving a lasting impression. Common Bourbon variants include Yellow Bourbon, Red Bourbon, and Pink Bourbon.
Take Yellow Bourbon from Fazenda Rainha in Brazil as an example—it is produced in the Mogiana region, at an altitude between 1400 and 1950 meters, and processed using the semi-washed (pulped natural) method. After pour over brewing, you can detect pronounced notes of sugarcane sweetness, black tea, and nuts, with soft and clean acidity, rich chocolate aromas, and an overall bright and smooth mouthfeel, making it ideal for coffee lovers who enjoy a balance of fruity notes and sweetness.
Caturra (Caturra)Its appearance is very similar to that of Bourbon, often making it difficult for beginners to distinguish at first glance. However, upon closer observation, the tip of Caturra beans is slightly curved, and the overall outline is more slender. In cupping, Caturra typically shows bright acidity and rich sweetness, with clear and layered flavors. This variety is widely grown in Central America and serves as an important base for many high-quality coffees.
For instance, Finca El Verdo in Colombia’s Rose Valley region, at an altitude of about 1700 meters, uses an anaerobic double enzymatic washed process for its Caturra variety. After pour over brewing, it presents intense notes of peach, accompanied by complex tones of rose and chocolate liqueur, with an entrance as lively as peach juice, well-balanced acidity and sweetness, and a creamy toffee-like smooth finish.
Catuai (Catuai)A hybrid of Caturra and the Mundo Novo variety, its appearance combines the slender, rounded form of Caturra with the flatter characteristics of Mundo Novo. The beans are mostly round but have slightly elongated tips. This variety performs excellently in terms of flavor, showcasing notable acidity and a clean mouthfeel, along with pronounced fruity aromas. It is a common planting choice on many coffee farms in Central and South America.
Finca Canet in Costa Rica’s Tarrazú region, at an altitude of 1900 meters, processes its Yellow Catuai variety using the washed method. After pour over brewing, it reveals a strawberry juice-like acidity and sweetness with citrus tones, vibrant flavors like musical notes, and a finish with floral and almond aftertastes—perfectly suited for brewers who enjoy fruity and refreshing profiles.
Geisha (Geisha)Known for its plump bean shape and long, pointed ends, this variety has garnered significant attention in the coffee world in recent years. Particularly the Geisha produced in Panama’s high-altitude regions, which often features delicate floral notes and refined, elegant fruit acidity—qualities that have made it synonymous with specialty coffee.
The Geisha Red Label from Finca Esmeralda, sourced from Finca La Máscara in the Boquete region, grown at an altitude of 1600 to 1800 meters, and processed using the natural (sun-dried) method. After pour over brewing, it releases aromas of ginger flower and citrus, with an entrance that weaves ripe fruit and black tea flavors, achieving a fruit-tea-like balance of acidity and sweetness, and a finish marked by berry sweetness and lingering aftertaste—a classic representation of the Geisha variety.
SL28 and SL34These two varieties originate from Kenya. SL28 beans resemble Bourbon in appearance, with thick, rounded bodies, and genetic analysis confirms they belong to the Bourbon genetic group; whereas SL34 beans are more similar to Typica in appearance, with slender, oval-shaped bodies that appear slightly flattened when viewed from the side. Both varieties demonstrate complex and varied acidity and excellent sweet finishes in pour over brewing, with SL34 offering a richer and cleaner taste.
Kenya’s Thika region’s Assaliya Coffee, grown at an altitude of 1550 to 1750 meters and processed using a 72-hour washed method, presents unique flavors of black plum and cherry tomato after pour over brewing. It has intense, full-bodied acidity, with mid-palate sweetness as pronounced as fruit juice, and a finish featuring berry, brown sugar, and green tea aromas—showcasing the classic flavor profile of the SL varieties.
The above content is compiled by CoffeeHunters, a coffee news website.
