The crackling is dried out and fried a second time until it puffs up light and crisp — the same double-fry trick used for pork rinds the world over, just done the Danish way.
Pork skin is dried, then deep-fried twice until it puffs into a crunchy, salty crackling. It's a common bar and market snack across Copenhagen, often served alongside beer or as a garnish for other pork dishes.
Danish Hot Dog (Pølser)
Smørrebrød
Flæskestegssandwich (Roast Pork Sandwich)