Tracing the origins of chocolate: A recent study is shedding new light on the domestication and spread of the cocoa bean.

Mesoamerica is often considered the ‘homeland’ of chocolate due to its significance for many ancient cultures in this region, but the cocoa tree, Theobroma cacao, in fact originated in the tropical rainforests of South America. Until now, though, our understanding of the plant’s early use – and how and when it spread to other parts of the Americas – has been limited.