Robusta is a resilient, strong coffee plant, and is the second most common species in the world. Around 25% of all coffee sold worldwide is Robusta, which is native to West Africa but is today also grown in Brazil, India, Indonesia, Vietnam, and Southeast Asia.
The beans are dome-like and round and are light green in color. Robusta is bitter in taste, has a high caffeine content (2%-4.5%) and a thick crema (the layer of foam on the surface of a shot of espresso). It is considered inferior to the Arabica species.