I love telling people this.... No, this sweet and sour spareribs is not the reddish sweet and sour pork more commonly known as ku lou yuk (咕噜肉). No pineapple juice is in this (in fact, the Asian ku lou yuk uses plum sauce and not pineapple juice). This is the real stuff. Black vinegar. Cooked together with good old sugar, lots of it, and some aromatics and you have this sticky, perfectly glazed knock-your-socks-off spareribs. Very easy to make in fact.