"A trip to Madrid should not be complete without a stop at the Jamón Museum. This is a great place to grab a quick snack or a cheap meal in true Madrid style. You'll find bocadillo de chorizo (salami) among others here... in short, a good selection of bocadillos."
"Now for those who love Bocadillos but can only spend so much, there’s no other place to enjoy them but at Museo del Jamón. Bocadillo de Chorizo is one of a favorites."