Gratin
au Gratin, is something toasted or baked so as to produce a surface that grates. A sole or a cauliflower au gratin is a sole or cauliflower strewed with breadcrumbs or raspings, and baked in the oven to a golden tint. In strict reason, the phrase ought to apply equally to a sole fried with breadcrumbs. But language is not obedient to reason, and custom has ordained that what is *called a Gratin shall be baked.