Gratin dauphinois is a French dish of sliced potatoes baked in milk or cream, using the gratin technique, from the Dauphiné region in south-eastern France. There are many variants of the name of the dish, including pommes de terre dauphinoise, potatoes à la dauphinoise and gratin de pommes à la dauphinoise. The first mention of the dish is from 12 July 1788. It was served with ortolans at a dinner given by Charles-Henri, Duke of Clermont-Tonnerre and Lieutenant-general of the Dauphiné.