The siu yuk (crisp-skinned roast pork) – bought from a siu mei (Chinese roast meat) shop – should be from the belly, with a nice layering of fat, or from the more flavourful but less meaty rib ...

Although this way is more expensive - you have to buy the meat from a Chinese roast meat shop - it has the advantage of being quicker to make because you don't have to boil the pork first.