Meaning of the word "mornay sauce" in English

What does "mornay sauce" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

mornay sauce

US /ˈmɔːr.neɪ ˌsɔːs/
UK /ˈmɔː.neɪ sɔːs/
"mornay sauce" picture

Noun

a cheese sauce, typically made with a béchamel base and Gruyère or Parmesan cheese, often used with pasta, vegetables, or seafood

Example:
The chef prepared a delicious fish gratin with Mornay sauce.
Cauliflower with Mornay sauce is a classic side dish.