Pupusas are a traditional dish from El Salvador, consisting of thick corn tortillas filled with various ingredients. Common fillings include cheese, beans, and pork, but they can also be made with other ingredients like vegetables or spices. Pupusas are typically served with a side of curtido, a pickled cabbage slaw, and salsa roja, a tomato-based sauce. These delicious treats are often enjoyed as street food and are popular in both homes and restaurants. The preparation involves mixing masa (corn dough) with the desired filling, shaping it into a disc, and cooking it on a griddle until golden brown.