 Another listener writes, coming to Laura's defense on this one, I would consider salsa more in the relish category. Thank you. But isn't relish a condiment? Okay, so I guess I should look up the definition of condiment, which could be something you put on something. What else? Okay, what is a condiment? Here's the definition of condiment. A substance such as salt or ketchup that is used to add flavor to food.