Robusta coffee is native to Africa and belongs to the Rubiaceae family. It is a tropical shrub from 2 to 4 m high.Robusta coffee has a higher caffeine content than Arabica, between 2 and 2.5%. Robusta coffee cultivation has grown rapidly and now accounts for 35% of world production. It is mainly used to make coffee blends and offer authentic aromatic profiles.Robusta coffee is one of the two largest varieties of coffee in the world, along with Arabica coffee. The flavour of Robusta is characterised by a more complete body when it is rather bitter and has fewer aromas than Arabica coffee. Its taste is a little woody, sometimes earthy. The robusta coffee bean must be very heavily roasted. Robusta coffee is often used for the production of espresso.