Coffee is a widely consumed beverage prepared from the roasted seeds—commonly called "beans"—of the coffee plant. Coffee was first consumed as early as the 9th century, when it appeared in the highlands of Ethiopia. From Ethiopia, it spread to Egypt and Yemen, and by the 15th century had reached Constantinople (Istanbul - Turkey), and northern Africa. The Dutch become the first to transport and cultivate coffee commercially. Coffee is smuggled out of the Arab port of Mocha and transported to Ceylon and East Indies for cultivation. Today, coffee is one of the most popular beverages worldwide. More than 400 billion cups are consumed each year. It is a world commodity that is second only to oil.