2 cups masa harina
1 1/2 cups warm water
1/2 teaspoon salt
1 cup refried beans
1 cup shredded cheese
1 cup cooked and shredded pork or loroco, optional
Mix masa harina, water, and salt until smooth and pliable
Let dough rest for 10 minutes
Divide dough into equal balls
Flatten each ball into a thick disc
Place filling in the center
Fold dough around filling and seal
Gently flatten again into a thick patty
Heat a lightly oiled skillet or griddle over medium heat
Cook pupusas for 3 to 5 minutes per side until golden and cooked through
Serve with curtido and salsa roja