Moules-frites or moules et frites is a main dish of mussels and French fries originating in Northern France and Belgium. The title of the dish is French, moules meaning mussels and frites fries, with the Dutch name for the dish meaning the same. It is considered the national dish of Belgium.

French fries, chips, finger chips, french-fried potatoes, or simply fries are batonnet or allumette-cut deep-fried potatoes of disputed origin from Belgium or France. They are prepared by cutting potatoes into even strips, drying them, and frying them, usually in a deep fryer. Pre-cut, blanched, and frozen russet potatoes are widely used, and sometimes baked in a regular or convection oven; air fryers are small convection ovens marketed for frying potatoes.