On South Africa’s palm tree-lined east coast, within the humid port city of Durban and its surrounds, a unique style of Indian cuisine has evolved over the course of 158 years. Locals say you can’t leave before you try one of the Durban curries: smouldering hot mutton curry studded with potato chunks called “gravy soakers,” fiery fish curry spiked with black tamarind and curry leaves; or bunny chow, a hollowed-out quarter-loaf of white bread filled with curry.