Method, information terminal, and non-transitory computer-readable recording medium that customize menu information based on religion information

A method of controlling an information terminal of a user that communicates over a network with a first server that manages religion information of the user corresponding to identification information that identifies the user, the method comprising:

• transmitting the identification information stored in the information terminal to the first server;
• acquiring, from the first server on a basis of position information and the identification information of the information terminal through a 1st first operation screen displayed on a display of the information terminal of the user, restaurant information expressing one or more restaurants which exist in an area including a point indicated by the position information and which are compatible with a religion indicated by religion information corresponding to the identification information, wherein the 1st first operation screen conforms to a common style designed by a matching app of the first server;
• acquiring a restaurant ID corresponding to one restaurant from among the one or more restaurants and a seat ID indicating a seat of the user through a 2nd first operation screen displayed on the display of the information terminal of the user, wherein the 2nd first operation screen conforms to the common style designed by the matching app of the first server;
• acquiring, on a basis of the restaurant ID, menu information indicating one or more foods provided by the one restaurant over a network from a second server associated with the one restaurant corresponding to the restaurant ID;
• acquiring, from the first server on a basis of the identification information, the religion information;
• extracting one or more first foods corresponding to the religion information at the information terminal, on a basis of the menu information and the religion information, the religion information including information related to an ingredient that should be avoided according to the religion of the user, the menu information including ingredient information for each food;
• displaying the one or more first foods through a second operation screen for accepting an order of a food to be provided by the restaurant, wherein the second operation screen customized according to a style designated by the one restaurant;
• and
• transmitting from the information terminal to the second server i) food order information indicating the food selected from among the one or more first foods using the second operation screen and ii) the seat ID.