Samurai sauce (French: '''Sauce samouraï''') is a Belgian condiment prepared from mayonnaise, ketchup, and harissa or sambal oelek[1] commonly served with French fries. The sauce is also popular and widely used throughout France, and is not to be confused with the also popular Algerian sauce. There is indeed a version also called Algerian sauce which is similar to Samurai sauce, but with onions. According to Harry Pearson, author of A Tall Man In A Low Land: Some Time Among the Belgians, mobile friteries in Belgium often have samurai sauce, with some making it their special item.[2] In addition, many kebab restaurants have Samurai sauce as an available condiment.