REVEALED: Caribbean rum SO strong travellers are banned from bringing a bottle home

It’s the oldest working waterwheel in the Caribbean and, possibly, the world. The distillation process begins with raw sugar cane, crushed so that the sugary juice can then be left to ferment in huge vats.

It’s then transferred to a giant copper still, and heated over a wooden fire so the liquid boils and then condenses before being drawn off to create a rum that is, staggeringly, up to 89 per cent alcohol by volume.