Rémoulade (English: /reɪməˈlɑːd/; French: [ʁemulad]) is a cold sauce. Although similar to tartar sauce, it is often more yellowish, sometimes flavored with curry, and often contains chopped pickles or piccalilli. It can also contain horseradish, paprika, anchovies, capers and a host of other items.
It is often used as a condiment or dipping sauce, primarily for sole, plaice, and seafood cakes (such as crab or salmon cakes) but also served with meats.
Mayonnaise (/ˌmeɪəˈneɪz/), colloquially referred to as "mayo" (/ˈmeɪoʊ/), is a thick, creamy sauce with a rich and tangy taste that is commonly used on sandwiches, hamburgers, bound salads, and French fries. It also forms the base for various other sauces, such as tartar sauce, fry sauce, remoulade, salsa golf, ranch dressing, and rouille.
Mayonnaise is an emulsion of oil, egg yolk, and an acid, either vinegar or lemon juice; there are many variants using additional flavorings. The color varies from near-white to pale yellow, and its texture from a light cream to a thick gel.