How do you prepare a useful brief for social media?

A useful brief fits on one page: who sits down, which dishes cannot be left out, what must not be said and who answers the chat. A twenty-page document of adjectives will not be read by the floor between services. The owner gathers the menu, the hours, the quiet days and the name of the person inside who signs off. A generic brand PDF is sent over and the first month speaks in a tone nobody at the door uses. Carlota Fermín returns that page closed: dishes, bans and the in-house owner, before the calendar is built.