gratin

/ɡʁatɛ̃/
1.
nounmasculine

a dish baked in the oven with a browned crust (often made of cheese, butter and/or breadcrumbs)

the browned, crispy crust on top of such a dish

Je prépare un gratin de courgettes ce soir.

I'm making a zucchini gratin tonight.

2.
nounmasculine

the upper crust; high society; the social elite

Tout le gratin de la mode était présent au défilé.

All the fashion elite were present at the show.