Every South African city has a food culture. Durban has a food grammar — a set of rules about heat, starch and structure that applies across dishes which otherwise have nothing in common.
The port did most of it
Durban's harbour made it a point of arrival. From 1860, indentered labourers arriving from India brought cooking traditions that did not dissolve into the local scene so much as establish a parallel one — which then spent a century in conversation with Zulu cooking and with the colonial kitchen.
The result is not fusion in the modern restaurant sense. It is older and less deliberate than that: techniques borrowed because they worked, ingredients substituted because that is what the market had.
Heat as a baseline, not a feature
In much of the country chilli is an addition. In Durban it is closer to a starting condition. Masala blends here are built for depth rather than shock, and the city's tolerance for heat is calibrated several notches above the national average — something visitors discover empirically.
Ask for mild and you will still be asked, politely, whether you are sure.
Structure: the vessel matters
Durban thinks hard about what holds the food. A hollowed loaf, a roti, a bowl of rice — the container is part of the dish's design, not an afterthought. It is a practical inheritance from food built to be eaten by people who were working, walking or short of time.
The climate finishes the argument
Subtropical humidity pushes cooking outdoors and pushes eating later. Combine that with a coastline and you get a city where the default setting is communal, informal and warm — in both senses.