Chicken Marengo is a French dish consisting of a chicken sautéed in oil with garlic and tomato, garnished with fried eggs and crayfish. The dish is similar to chicken à la Provençale, but with the addition of egg and crayfish, which are traditional to Chicken Marengo but are now often omitted. The original dish was named to celebrate the Battle of Marengo, a Napoleonic victory of June 1800.