what are duros made of
Duros with chili and lime flavoring. Round flour duros puff up when fried.  Duros de harina (also known as pasta para duros, duritos, durros, pasta para durito, chicharrones, churritos, Mexican wagon wheels or pin wheels) are a popular Mexican snack food made of puffed wheat, often flavored with chilli and lime. When cooked, duros have a light, airy consistency similar to chicharrones.