Remove packaging from pork belly and place on plate (if time, rest in fridge for a little while to dry out skin).
Place pork belly on chopping board, skin side down. Use a knife to cut horizontal strips into the pork meat (stop before you get to the skin).
Place a cooling rack into a baking tray and rest pork on top. Boil the kettle and once boiled, pour the boiling water over the pork. Note 2
Use folded paper towel to pat the pork skin dry, ensuring no moisture is left on the skin.
Use tin foil to make an open envelope to wrap around the pork, folding at the sides with the top open.
Place pork skin side up into the Air Fryer basket, push basket into Air Fryer and cook at 200 degrees, 400 Fahrenheit, gas mark 6 for 20 - 25 mins till the skin has noticeably cracked Note 3
Reduce the temperature to 180 degrees, 350 Fahrenheit, gas mark 4 and cook the pork for a further 20 mins.
Remove basket from Air Fryer and use kitchen tongs to remove pork belly from alfoil, rest on plate for 3 - 5 mins before slicing
Serve with potato cubes and apple sauce