2. Individual fruits or vegetables as well as mixtures of these foods that have been sliced, diced and chopped into small bits, flavored with vinegar, salt, sugar, and spices to create a savory, sweet tasting flavored sauce served to complement a variety of foods. Relishes are typically used as a condiment, similar to a salsa. One of the most common types of relish is pickle relish, but there are also a wide variety of different relishes available such as onion relish, corn relish, cranberry relish and many others providing flavors from sweet to tart and mild to spicy.