mornay
adjective /ˈmɔːneɪ/
  /ˈmɔːrneɪ/
 - a mornay sauce is made with cheese, milk and butter- fish in mornay sauce
- eggs mornay
 Word Originperhaps named after Mornay, the eldest son of the 19th-cent. French chef Joseph Voiron, who apparently invented the sauce.