barmecidal
/ˌbɑrmɪˈsidəl/Definitions
1. adjective
Giving the appearance of a feast but having no substantial food.
“The barmecidal banquet was a clever ruse to distract from the real issue.”
2. noun
A barmecidal feast, especially one in which the food is merely symbolic or illusory.
“The artist’s installation was a barmecidal celebration of an empty space.”