how long to cook a 1.696 kg pork roast
â¢ Firstly, preheat oven to 220Â°C. â¢ Pat the surface of the rind dry with paper towel. â¢ Rub a little oil and salt well into the scored rind. â¢ Cook for 20 minutes at 220Â°C (this will begin the crackling process), then turn down oven to 180Â°C and cook for 45 minutes per kg.