Remoulade 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 condiments. 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. (source)
Huh, TIL!