tartar sauce

or tartare sauce


a mayonnaise dressing for fish and seafood, usually with chopped pickles, onions, olives, capers, and green herbs added.

Origin of tartar sauce

First recorded in 1895–1900, tartar sauce is from the French word sauce tartare
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019