Catering costs, miscellaneous expenses, etc.. The cost of mineral water purchased by the training school for the trainees will be included in the catering costs or miscellaneous costs in the training costs. If the training school provides meal services for the trainees, including the provision of mineral water as a beverage, then this part of the cost will be categorized as catering costs, and the training school will categorize the cost of purchasing the mineral water as miscellaneous costs or other costs, which is used to include some expenditures that are not easy to be categorized.