A salsa is any of a variety of sauces used as condiments for tacos and other Mexican and Mexican-American foods, and as dips for tortilla chips. They may be raw or cooked, and are generally served at room temperature.
Though the word salsa means any kind of sauce in Spanish, in English, it refers specifically to these Mexican table sauces, especially to the chunky tomato-and-chili-based pico de gallo, as well as to salsa verde.
