In a traditional restaurant, what changes every day is not on the printed menu. The daily special, the chef's suggestion, the fish that came in that morning and the seasonal dessert are chalked on a blackboard, carried from table to table or hung on a wall where part of the room cannot read it. So the waiter recites it at every table, faster or slower depending on the hour. Yet it is what the regulars come for, since they know the rest of the menu by heart.
Lunch service comes down to one hour. Between 12:30 and 1:30 pm, the room fills all at once with guests who are short of time and want the set lunch. It is also the hour when the phone rings for a table that evening, when someone asks whether there is cream in the blanquette, and when the daily special runs out without the terrace knowing.
The wine list, meanwhile, is printed for the year, with bottles you no longer have and vintages that have changed. As for allergens, guests still ask the waiter, who goes to check in the kitchen, even though the list has to exist in writing anyway.