Prepare the pork belly by rubbing it with a special marinade, ensuring to get it into all the crevices.
To achieve crispy skin, brush the pork belly with vinegar and sprinkle a layer of salt to help draw out moisture.
Air fry the pork belly at 250°F for 30 minutes.
After 30 minutes, remove the salt and brush the pork belly with oil.
Increase the air fryer temperature to 400°F and continue cooking until the skin is crispy.
