Pronounced MO-lay, mole is a term that refers to a specific type of savory sauce. It is derived from the word molli in Nahuatl (the language used by the ancient Aztecs and the modern-day indigenous Nahua peoples), which simply means "sauce." Moles typically contain Mexican chiles for spice, some kind of sour ingredient (e.g. tomatillos), sweet (e.g. sugar, fruit, or chocolate), nuts and thickeners (e.g. peanut butter, bread, tortillas) and additional spices.