The definition of a plat du jour is the dish of the day, or special prepared by a restaurant on a particular day in addition to the regular menu.
When a restaurant makes lasagna only on one special day and offers it as a special that is not on the regular menu, the lasagna is an example of plat du jour.
The featured dish of the day in a restaurant.
Origin of plat-du-jour
- French plat du jour (“dish of the day")