The document describes the Mumbai dabbawala system of delivering home-cooked lunches to office workers. It began in the 1890s when a Parsi banker employed someone to bring food to work, and others followed. It has since grown to a network of over 5,000 dabbawalas who deliver 200,000 home-cooked meals across Mumbai each day with nearly zero errors. The system relies on sorting dabbas at collection points and railway stations then transporting and distributing them using bicycles, carts, and local trains.