Bring a large saucepan of water to the boil, then add the pork belly ribs. Turn the heat down and simmer for 45 minutes, or until the meat is tender and cooked through. Drain the ribs in a colander and allow to dry for a couple of minutes.
Meanwhile, make the sauce. Heat the oil in a small saucepan over a medium heat and chuck in the cumin seeds and chilli flak