Don’t overthink the cooking of your pork roast. Simply crank the oven to 220C. Preheat oven for 30 minutes. Pour boiling water over the skin of the pork roast and pat dry (if you can do this the day before even better, then leave uncovered in fridge overnight). The key to perfect crackle is to get the skin as dry as possible. Rub with olive oil and Murray River Salt Flakes (sold here) and place pork in the oven for 30 minutes. Then reduce heat to 120C and roast for another two hours.
Our pork is from Borrowdale Free Range Pork and is certified free range by APIQ - which is the 'gold standard' in free range pork certification. They are farmed with love and respect in the South Western plains of Victoria.