Pickled pork skin in vinegar with chiles and vegetables is a tangy Mexican street snack. This protein-rich, fresh topping is a classic addition to tostadas and antojitos for family enjoyment.
Bring a large pot of water to a steady boil, add the cleaned pork skin, and simmer over medium-low heat for 40–45 minutes until the skin is tender but not falling apart.
Remove pork skin, drain thoroughly, let cool, then slice into bite-size strips or squares; pat dry to remove excess moisture and set aside.
Meanwhile, in a saucepan over medium heat, combine vinegar, water, salt, black peppercorns, oregano, and bay leaves; bring just to a boil and immediately remove from heat.
In a non-reactive bowl or jar, layer pork skin, onions, carrots, and jalapeños, alternating for even distribution of flavor.
Pour the hot pickling liquid over the layered ingredients, ensuring everything is submerged. Let cool to room temperature, then cover and refrigerate for at least 1–2 hours before serving for best flavor and texture.