Many different plants are used to make drinks but coffee and
cocoa rank among the world’s favourite beverages. Coffee
contains the alkaloid caffeine, which is a stimulant and diuretic.
Coffee is made from the seeds of several African species of
the genus Coffea. Found in the Gardens are Coffea liberica (Liberian
Coffee), Coffea robusta (Robusta Coffee) and Theobroma cacao
(cocoa).