Amuse-bouche

An amuse-bouche or amuse-gueule is a single, bite-sized hors d’œuvre. Amuse-bouches are different from appetizers in that they are not ordered from a menu by patrons, but, when served, are done so for free and according to the chef's selection alone. These, often accompanied by a complementing wine, are served both to prepare the guest for the meal and to offer a glimpse into the chef's approach to cooking.

The term is French, literally translated to "mouth amuser". The plural form is amuse-bouche or amuse-bouches. In France, amuse-gueule is the proper term normally employed in conversation and literary writing, while amuse-bouche is a euphemistic hypercorrection that appeared in the 1980s on restaurant menus and is used almost only there, the stand-alone word gueule (in proper usage animal's mouth) being a derogative way of saying mouth or face .