Sir, Dabbawala dont prepare the food. They collect food from the clients house and reach it to office place of a person. The most important part is the person who collects the tiffin is not the same who delivers at office. Exchanges of dabbas take place at local railway stations and then taken to various places. all sorting is based on certains marks made on dabbas. No language is used for it.9The reason may be all these dabbawals were illiterate when they started this job)
