A more elaborate dish utilizing tortilla chips is nachos. First created circa 1940 by Ignacio "Nacho" Anaya,[3][4][5] nachos are tortilla chips served with melted or shredded cheese, although often other toppings are added or substituted, such as meat, salsa (such as pico de gallo), refried beans, guacamole, sour cream, diced onions, olives, and pickled jalapeños. More elaborate nachos are often baked for a short period of time to warm the tortillas and melt shredded cheese.