What is Coffea robusta (Coffea canephora)?

Coffea canephora - Robusta - is the second most commercially important coffee species, accounting for approximately 30–35% of global production. It originated in central and western sub-Saharan Africa and is now cultivated extensively across Vietnam, Brazil, Uganda, Indonesia, and the Ivory Coast.

Robusta is a fundamentally different plant from Arabica: grows at lower altitudes, tolerates higher temperatures and more disease pressure, yields more per hectare, and carries far greater disease resistance - particularly to leaf rust. Caffeine content is roughly double that of Arabica (2–2.7% versus 1.2–1.5%), contributing to higher perceived strength.

In the cup, lower-grade Robusta is typically described as earthy, woody, or rubbery - less aromatic complexity and acidity than Arabica. But the range is wider than that characterisation suggests. High-quality Robusta from well-managed origins - fine Robusta from Uganda, premium lots from Vietnam - can produce clean, acceptable cups. Robusta is primarily used in espresso blends (for body and crema), in instant coffee, and as a commercial commodity. Specialty interest in fine Robusta is growing, though it remains a niche.