A relish is a cooked, pickled, or chopped vegetable or fruit food item typically used as a condiment in particular to enhance a staple. In the United States, the word relish is frequently used to describe a single variety of relish -- pickle or dill relish, made from finely chopped pickled cucumbers. Such relish is commonly used as a condiment, and is an important ingredient in many varieties of the U.S. version of tartar sauce.