Relish is an Indian sauce, essentially a chutney, adapted to European tastes. There are many recipes. Its distinctive feature is a slightly chunky texture rather than smooth. The composition and size of the chunks can vary, but the main thing is not to turn the sauce into a puree. The flavor can vary, from sweet to sour and spicy. I like it balanced and not too spicy. The rich mustard flavor of this sauce is perfect for meat, fish, and sandwiches. For a snack, you can simply spoon it on a slice of delicious fresh bread.