The ordering menu is usually two copies, one for the kitchen and one for the waiter to keep. The order form, also called menu taking or production form, is a written certificate for the restaurant waiter to take food such as vegetables and drinks from the kitchen and bar according to the contents and requirements of the guests. It is also an important basis for cashiers in catering enterprises to issue invoices and collect catering accounts, and it is the first voucher needed in the process of catering income.