How to Make It
In a large saucepan, combine the pork skin, jalapeño, onion, black peppercorns, coriander seeds and garlic. Add 4 quarts of water and bring to a simmer. Cook over moderate heat until the skin is tender and pliable, about 1 hour. Transfer the pork skin to a baking sheet and let cool slightly; discard the cooking liquid. Using a sharp knife, cut off any meat and as much fat as possible from the underside of the skin.
Preheat the oven to 300°. Arrange the pork skin on a parchment paper–lined baking sheet and bake for about 2 1/2 hours, turning halfway through, until deep golden and dry. Transfer the pork skin to a wire rack to cool, then break into 1-inch pieces.
In a large enameled cast-iron casserole, heat 3 inches of canola oil to 400°. In a small bowl, mix the smoked paprika with the salt. Working in batches, fry the cracklings, stirring, until puffed and crisp, about 30 seconds. Transfer the cracklings to paper towels and season with the paprika salt. Let cool, then serve with any remaining paprika salt