Add water to the minimum line in your pressure cooker.
Put pork skin in whole or large pieces.
Pressure cook on high for 5 minutes then use the quick release.
Take the skin out and plunge it into a bowl of iced water to cool it down.
Once the skin has cooled, dry it off with a clean tea towel or paper towels.
Cut the skin into the size of chunks that you want, they will shrink in the cooking.
Place in a bowl and splash with oil, add some good quality sea salt and mix together.
Put into a preheated air fryer for 20 minutes, stirring round every five minutes
After 20 minutes turn the heat up to 210c and continue for another 10 minutes or so.