Place the pork belly on a clean work surface and open it up flat with the skin side down.

Sprinkle the pork with the salt and gently rub the salt into the pork.

Sprinkle the rosemary and pepper over the pork and rub it into the meat as well.

Roll the pork belly up tightly, making a spiral.

Use butcher's twine or string to tie the pork roast closed, Make sure you double knot the string so it stays closed during cooking. Tie a string around the pork every 2 inches so it is very secure.

Place the roast seam side down on a rack inside a roasting pan or baking tray with an edge. Sprinkle some more salt and pepper over the roast then drizzle it with olive oil. Rub the oil over the roast so it is completely coated. Let the prepared pork belly sit at room temperature while your oven heats.

Preheat your oven to 400 degrees F (200 degrees C).

Roast the pork in the oven for one hour then lower the temperature of the oven to 350 degrees F (170 degrees C) and continue to cook for another 2 hours. The internal temperature of the meat should be 170 degrees F(76 degrees C) on a meat thermometer.

Let the meat rest for 10 minutes and then use a sharp knife to slice and serve.