Mash the pork rinds a little with your hand or a kitchen hammer. No dust left.
In a frying pan with oil. Sauté the onion, garlic, chili, Del Rancho Chicharrones, the quesillo salt, and pepper and mix well, reserve
In another container proceed to prepare the dough, for this add the flour, the salt along with the remaining 3 cups of water, and begin to knead until it is firm, smooth, and does not stick to the hands
Then take a portion and form a ball with the dough then make a hole inside
Add a tablespoon and a half of the pork rind with cheese filling and shape it into an oval shape with the palms of your hands.
Place the pupusa on a comal previously heated over medium heat and grill on both sides