You can't. By inquiring the State Administration of Consumption Supervision, it is known that there must be consumption details on the catering ledger, but it is not only the unit price, so it is impossible for the catering ledger not to write the unit price. Catering, also known as catering industry, refers to the food production and operation industry that provides consumers with all kinds of drinks, food, consumption places and facilities through instant processing, commercial sales and service labor.