A pupusa is a thick griddle cake or flatbread from El Salvador and Honduras made with cornmeal or rice flour stuffed with one or more ingredients including cheese, beans, chicharrón, or squash. It can be served with curtido and tomato sauce and is traditionally eaten by hand. Pupusas have origins in Pre-Columbian Mesoamerica but were first mentioned in 1837 by Guatemalan poet José Batres Montúfar. In El Salvador, the pupusa is the national dish and has a day to celebrate it.