What is the Bourbon coffee variety?

Bourbon is one of the two ancestral Arabica lineages outside Ethiopia, born from a mutation that appeared on Bourbon Island (today Réunion) after Yemeni seedlings were introduced in the early 18th century. More productive than Typica, it delivers a round, sweet, complex cup widely considered the benchmark for Latin American and East African Arabicas.

Bourbon's story starts in 1715 and 1718, when the French East India Company introduced Yemeni arabica seedlings to Bourbon Island — distinct from the plants that had travelled to Amsterdam and on to the Caribbean. A local mutation then took hold: light-green new leaves (versus bronze on Typica), a more compact habit, shorter internodes, rounder cherries, and yields 20 to 30 % higher. The variety was exported in the 19th century to Brazil (1860), to East Africa (via French missionaries in Kenya and Tanzania in the late 19th century) and to Central America. It thrives especially well in Rwanda, Burundi, El Salvador and southern Brazil.

In the cup, Bourbon is famed for roundness, a plush body, caramel-honey sweetness, lively but controlled acidity and broad aromatic complexity — red fruit, citrus, milk chocolate, sometimes floral notes. The best Bourbons from El Salvador, Rwanda or Burundi routinely clear 86-90 SCA points. Three chromatic sub-types exist: Red Bourbon (the most common), Yellow Bourbon (a Brazilian mutation from 1930) and Orange Bourbon (rarer, mostly in El Salvador and Rwanda), each with its own sugar-acidity balance. A special case is Bourbon Pointu (Laurina), a naturally low-caffeine mutation (50 % less) found on Réunion, rediscovered in the 2000s and now prized in the high-end specialty market.

Most of Latin America's commercial varieties descend from Bourbon: Caturra (a dwarf mutation in Brazil, 1935), Mundo Novo (a natural Bourbon × Typica hybrid, Brazil 1940), Catuai (Mundo Novo × Caturra, 1949), Pacas (El Salvador), Villa Sarchi (Costa Rica), along with Kenya's SL28 and SL34 lineages, partly drawn from bourbonised stock. Like Typica, Bourbon is very susceptible to leaf rust; the 2010s outbreak led many Central American growers to replace their Bourbon plots with rust-resistant Catimors — at a cost in cup quality. Specialty roasters in Belgium — Brussels, Ghent and Antwerp — regularly feature Rwandan, Burundian or Salvadoran Bourbons, whose roundness pairs naturally with the Belgian filter-and-speculoos tradition.

Bourbon — profile and descendants