The mountainous archipelago of SãoTomé and Príncipe was once the world’s biggest exporter of cocoa. The twin island nation in the Gulf of Guinea was uninhabited until their discovery by Portuguese explorers in the fifteenth century. They brought slaves to work the land producing cash crops like sugar and coffee. In the 1890s these crops were replaced by cocoa and the islands became known as the biggest cocoa exporter in the world.

Produced by Russell Newlove

Image: Chocolate making; Credit: Russell Newlove/BBC