 Because the colours of the red tomato, white onion, green chili and cilantro are reminiscent of the colours of the Mexican flag, it is also sometimes called salsa bandera (flag sauce).In many regions of Mexico the term refers to any of a variety of salads (including fruit salads), salsa, or fillings made with tomato, tomatillo, avocado, orange, jícama, cucumber, papaya, or mild chilis.The ingredients are tossed in lime juice and optionally with either hot sauce or chamoy, then sprinkled with a salty chili powder.