Pupusa

A pupusa is a thick griddle cake or flatbread from El Salvador, Honduras, Nicaragua, and Guatemala made with cornmeal or rice flour, similar to the Colombian and Venezuelan arepa. In El Salvador, it has been declared the national dish and has a specific day to celebrate it. It is usually stuffed with one or more ingredients, which may include cheese , chicharrón, squash, or refried beans. It is typically accompanied by curtido (a spicy fermented cabbage slaw) and tomato salsa, and is traditionally eaten by hand. The exact origin of the term pupusa is unknown. The Dictionary of Americanisms [es], published by the Association of Academies of the Spanish Language, states that pupusa derives from the Nawat word puxahua meaning "fluffy" or "fluffy thing". In her book Interlude and Other Verses, Lidia Pérez de Novoa believed that pupusa derives from the Nawat word pupusawa meaning "to puff up".

Source: Wikipedia