What Are the Different Coffee Bean Varieties? An Introduction to Arabica Coffee Beans

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FrontStreet Coffee - Introduction to Coffee Bean Varieties

The genus Coffea contains roughly 40 species, but only three have commercial value for production: Arabica, Robusta, and Liberica. Together they are known as the "three native coffee species."

Arabica (Scientific name: Coffea arabica)

Arabica originated on the Abyssinian plateau in Ethiopia (today's Ethiopian plateau). At first it was used mainly as a medicine; the habit of roasting and drinking it took shape in the 13th century. It reached Europe via the Arab region in the 16th century and went on to become a beverage loved around the world. Arabica accounts for 75%-80% of all coffee. Its excellent flavor and aroma make it the only one of the native species that can be drunk on its own; on the other hand, it tolerates drought, frost, pests, and disease poorly, and is especially vulnerable to coffee's natural enemy, leaf rust disease.

The major growing regions for Arabica are South America (except parts of Argentina and Brazil), Central America, Africa (Kenya, Ethiopia, and other East African countries), and Asia (including parts of Yemen, India, and Papua New Guinea).

Arabica's subspecies include Typica and Bourbon, the varieties most commonly used for specialty coffee.

Robusta (Scientific name: Coffea robusta Linden)

Discovered in the Congo region of Africa, this variety resists leaf rust and is hardier than Arabica. The hot, humid regions where Arabica will not grow are exactly where Robusta thrives. Robusta has a distinctive aroma and bitterness — as little as 2%-3% in a blend can make the whole cup taste like Robusta. Its flavor is so pronounced and intense that drinking it on its own takes some resolve. It is generally destined for industrial products such as instant coffee, canned coffee, and liquid coffee. Its caffeine content is about 3.2%, far above Arabica's 1.5%.

Major producers include Indonesia, Vietnam, and West African countries centered on Côte d'Ivoire, Algeria, and Angola. Vietnam in particular has worked hard in recent years to join the ranks of the major coffee-producing nations.

Liberica (Scientific name: Coffea Liberica)

West Africa is the birthplace of Liberica. It adapts well to many environments, hot or cold, humid or dry, but it is not resistant to leaf rust, and its flavor is inferior to Arabica's. As a result it is traded only domestically in some West African countries (Libya, Côte d'Ivoire, and others) or grown for research.

According to ICO (International Coffee Organization) figures, excluding domestic trade within producing countries, about 65% of the coffee circulating on the world market is Arabica and 35% is Robusta. Arabica beans are slender and flat, while Robusta beans are rounder — so the two are easy to tell apart by appearance.

Knowledge Point

Robusta beans do not only play a "price adjustment" role; they also add body to a coffee.

In Summary

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FrontStreet Coffee Recommendation

Brazil, the world's largest coffee producer, is an ideal place to start exploring the varieties above. FrontStreet's Brazil Cerrado Red Bourbon is a classic Brazilian single origin: pulped-natural (semi-washed) and medium-roasted, it opens with the rich aroma of creamy peanut, toast, caramel, and hazelnut, with a round body, low acidity, and a gentle bitterness. It works equally well as a pour-over, in a moka pot, as an espresso SOE, in a siphon, or in a French press.

For something rarer, FrontStreet's Brazil Queen Estate comes from Mogiana, near South Minas, where fertile red volcanic soil lets the cherries take up plenty of nutrients. The estate grows the uncommon Yellow Bourbon — a natural mutation of Red Bourbon with cleaner fruit — and the cup shows a sugarcane sweetness found in few other regions, alongside fruit and chocolate notes.

Brazilian beans also anchor much of FrontStreet's espresso range. The Classic Blend, the nut-forward Premium Blend and Black Cocoa Blend, and the shop-focused Commercial Blend all include Brazil, adding chocolate and cream aroma plus a soft sweet-sour-bitter balance that keeps extraction stable.