We are quite familiar with the look of roasted coffee beans, but do you think of coffee as red fruits on a tree? That’s right, coffee beans are actually the seeds of a coffee cherry. Behind petroleum, coffee is the second most valuable commodity in the world. Around 75 to 80 percent of all grown coffee Caffea Arabica. The second most popular species is Coffea canephora, also known as robusta. The difference in taste is achieved through different roasting techniques and blends of the two beans.