The kitchen is so dirty, why cooks still wear white overalls ah?
Catering is a service industry, for example, salesmen, waiters, staff, etc. They have a uniform or similar uniforms, can also be said to be the work clothes, uniforms are their logo, but also for the staff dress uniform neat, give people a neat and tidy impression of the sharp, especially when the chef put on a white uniform, give people a clean, assured feeling.