Wash and thoroughly dry the skin of your pork leg then score with a very sharp knife.
Slice the onion, celery and apple (about 1 cm thick) then place on the bottom of your oven tray.
Place the pork leg on top of the onion mix, then baste with the olive oil, and rub in the salt. Pour water into oven tray.
Place into an oven pre-heated to 220c and bake for 20 minutes.
After 20 minutes turn the oven down to 180c and bake for a further 1 ½ hours.
Blend the onion celery and apple until smooth.
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