Staff must have sufficient knowledge of all the items on the menu and wine and drink lists in order to advise and offer suggestions to customers. In addition, they must know how to serve each dish correctly on the menu, what its accompaniments are, the correct cover and the makeup of the dish and its garnish. For beverage service, staff should know how to serve various types of wine and drink, in the correct containers (e.g. glasses, cups) and at the right temperature.