Let the skin dry out in the fridge to help it crisp up.
Place the fat side down in a roasting pan with another pan pressed on top to help the fat render evenly and stop the strips from curling up.
Preheat the oven to the highest temperature.
After 10 minutes, remove the top roasting tray and let the scratchings crisp up for another 10 minutes, keeping an eye on them as they can go too far very quickly.
As soon as they are ready, remove to a bowl and sprinkle straight away with the 7 spice salt.
Add to the table with your pulled pork and tattie tortillas or just snack on them as a crunchy canapé.
