What do Ethiopian heirloom and arabica coffee varieties mean?

Labels like native species and heirloom on Ethiopian coffee point to varieties that have not been formally classified, rather than to one named cultivar. Botanically, about eighty coffee species are recognized, but only three are widely cultivated for drinking: Arabica, Canephora (Robusta) and Liberica. Arabica accounts for roughly 70 percent of world production and has produced many mutations and hybrids.

Among Arabica coffee varieties, Typica traces back to trees taken from Ethiopia to Martinique and is now grown worldwide, while Bourbon, Caturra, Geisha and Pacamara are other common names. Robusta, meaning the Canephora species, covers about 30 percent of production; Liberica is grown in very small amounts and rarely reaches the market. Arabica grows mainly between 450 and 2,300 meters and is weak against pests and disease.

In the world of coffee, Ethiopian coffee is often labeled as "native species" or "heirloom"—but what exactly do these two terms mean? Starting from botanical classification, this article sorts out the differences among the three major cultivated species—Arabica, Robusta, and Liberica—and introduces one by one the origins and bean characteristics of common varieties such as Typica, Bourbon, Caturra, Geisha, and Pacamara, helping coffee enthusiasts understand the varietal lineage behind coffee beans. In this article, Front Street Coffee will also combine knowledge sharing to guide you in understanding the unique qualities of these varieties in terms of flavor and cultivation.

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From the perspective of botanical classification, there are currently about eighty recognized coffee tree species, but only three are truly widely cultivated as beverages: Arabica, Canephora (i.e. Robusta), and Liberica. Arabica accounts for about 70% of global coffee production, and many mutations or hybrid varieties have derived from it, such as Typica and Bourbon. Canephora accounts for about 30% of total production, but its subspecies are relatively few, the most typical being Robusta. Liberica has extremely low production and is almost never seen circulating on the market. Interestingly, Arabica and Canephora differ not only in flavor but also obviously in appearance. By comparing their shapes and sizes, one can see the connections and differences among coffee beans.

Next, Front Street will explain in detail the morphological characteristics of native Arabica coffee varieties.

Arabica Species (Arabica)

It is mainly grown in relatively high-altitude areas from 450 to 2,300 meters, with a suitable temperature of about 15 to 24°C. It is neither tolerant of high temperatures nor high humidity and is easily constrained by environmental conditions such as rainfall and soil. Its ability to resist pests and diseases is relatively weak, but it is very rich in mutations and hybrids. Because of its excellent flavor performance, almost all high-quality single-origin coffees come from Arabica.

Typica

Its origin traces back to coffee trees that traveled across the ocean from Ethiopia to Martinique. Today it has been planted all over the world and has produced many hybrid varieties. The bean body is slender, with a slightly pointed tip.

Caturra

This is a Bourbon mutation born in Brazil. It has high yield and is a major variety in Central America. Its appearance is similar to Bourbon, but the tip of one side of the bean body is slightly triangular.

Bourbon

It originates from coffee trees introduced to Bourbon Island (now Réunion). Together with Typica, it is one of the two currently best-known varieties. The bean body is relatively small, and its appearance calls to mind a rectangle.

Villa Sarchi

This is a mutation of Bourbon, discovered in a certain city in Costa Rica called Villa Sarchi, with relatively low yield. Its appearance is similar to Bourbon, but the bean body is smaller, giving a slightly slender impression.

Maracatu

It comes from crossing Maragogype grown in Nicaragua with Catuai (a hybrid of Caturra). The bean body is relatively large, with a flat tip, and its appearance easily calls to mind a square.

Maragogype

A Typica mutation born in Brazil, with relatively low yield. The bean body is both long and wide, making it a large-sized variety among coffee beans, so it is also called Giant Bean.

Geisha

It belongs to the Typica family and is a cultivated variety native to Ethiopia. Because the variety is rare, it is grown only in limited regions. The bean body is slender, with a very distinctive shape. Just like its appearance, its taste is also highly individual.

Pacamara

A specialty variety of El Salvador, it is a hybrid of Maragogype and Pacas (a Bourbon mutation). Yield is relatively low. The bean body is huge, and its shape is similar to Maracatu, with a flat tip.

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