Pork spare ribs are blanched, before being braised in a sweet, yet sour sauce. The black vinegar used in this sauce, sure packs a punch. Delicious served with freshly cooked rice.
Slab sugar is compressed brown sugar in blocks. It's also known as brown sugar in pieces. You will find sugar slabs, along with shaoxing wine, black soy sauce and Chinese black vinegar in Chinese/Oriental speciality stores.