The dark kitchen setup isn't just for delivery; I was wandering down a lane alongside one of London's many railways one evening and got chatting to a chap that

The dark kitchen setup isn't just for delivery; I was wandering down a lane alongside one of London's many railways one evening and got chatting to a chap that was having a smoke. A number of the archways housed separate little kitchens, some of them cooking for delivery, but others preparing food that would later be composed at high end restaurants. It sounded like things that take a lot of preparation or cooking are sometimes done centrally and shipped out in time for the main evening meals.