In cooking terms what does mornay mean?

Mornay refers to a classic French sauce made by adding cheese, typically Gruyère or Emmental, to a béchamel sauce, which is a white sauce made from butter, flour, and milk. This creamy sauce is often used in dishes like macaroni and cheese, gratins, or as a topping for vegetables and seafood. Mornay sauce adds richness and flavor, enhancing the overall dish.