Tortilla de patatas

right|thumb|A portion of tortilla

(potato omelette) is also sometimes called Tortilla espanola de patatas (Spanish omelette) to differentiate it from the dish commonly known as tortilla francesa (French omelette) or just tortilla, which is made only with eggs (or actually maize/corn, in the case of the Mexican tortilla). It is a very popular dish at any kind of event in Spain a