Bourbon & Chiroso

The story of Chiroso is a compelling example of how modern genetic science is rewriting the history of coffee cultivars. For years, producers in the Urrao region of Antioquia, Colombia, cultivated this plant under the assumption that it was a mutation of Caturra, often referring to it as 'Caturra Chiroso' due to the elongated shape of its beans. The name itself is derived from local rural slang, where 'chiroso' describes something stretched or elongated. This misidentification persisted for years, as the variety was treated as a local anomaly within the Bourbon-Typica lineage common to the region.

Recent investigations have fundamentally shifted our understanding of the plant's heritage. While early assumptions placed it firmly within the Bourbon-Typica group, genetic studies have indicated that Chiroso is likely linked to Ethiopian landrace varieties. This revelation has elevated the status of the variety, as it suggests that the plant possesses a genetic profile distinct from the standard cultivars that have dominated Colombian coffee production for decades. This discovery mirrors the 'Pink Bourbon' phenomenon, where a variety long thought to be a simple mutation is revealed to have a much more complex and ancient lineage.

In the field, Chiroso is noted for its physical characteristics, particularly the elongated shape of its cherries and seeds. There are reports of two distinct types of Chiroso: a taller variety often referred to as 'Bourbon Chiroso' and a shorter, more compact version known as 'Caturra Chiroso.' Some anecdotal evidence from producers suggests that the shorter type may be a regression of the taller original, as seeds from the taller plants occasionally produce the shorter phenotype. This variability in stature and growth habit remains a subject of interest for those studying the plant's adaptation to the high-altitude microclimates of Urrao.

For the specialty coffee industry, the primary appeal of Chiroso lies in its sensory profile. Unlike the heavy, chocolate-forward notes often associated with traditional Colombian Caturra or Bourbon, Chiroso is frequently described as having a more delicate, tea-like quality. It is celebrated for its intense floral aromatics, bright, juicy acidity, and complex sweetness, often reminiscent of high-end Ethiopian coffees. These characteristics have made it a darling of the competition circuit, where roasters and baristas seek out unique profiles that stand out in a crowded market.

Producers choose to plant Chiroso primarily for its high quality-potential and the premium prices it commands in the specialty sector. As the global market continues to prioritize unique, terroir-driven profiles, varieties like Chiroso offer a competitive advantage to farmers who can successfully manage its cultivation. However, because it is not a widely cataloged or standardized variety, its production remains largely localized to specific regions in Colombia, and it lacks the extensive agronomic data available for more common cultivars.

Despite its growing fame, Chiroso remains a relatively rare and enigmatic variety. It is not yet widely distributed, and its cultivation is still largely concentrated in the hands of a few dedicated producers in Antioquia. The lack of a formal, verified catalogue entry means that much of the knowledge surrounding its agronomic needs—such as its specific resistance to pests like coffee leaf rust or its yield potential—remains based on local observation rather than large-scale scientific trials.

Ultimately, Chiroso represents the intersection of traditional farming knowledge and modern scientific inquiry. It serves as a reminder that the genetic diversity of coffee is far greater than previously documented and that hidden gems may still be waiting to be identified in remote mountain regions. For the drinker, it offers a rare opportunity to experience a Colombian coffee that defies regional expectations, bridging the gap between the classic profiles of Latin America and the floral, ethereal qualities of its ancestral Ethiopian roots.