Place the ribs in a saucepan of water and bring to a boil over high heat. Skim the water, then add half of the ginger, half of the green onions, the Chinese rice wine and salt. Turn the heat to low and simmer for 15 minutes until the meat is cooked and tender. Continue skimming the pot. Strain and set aside, reserving the cooking liquid.

Heat a wok or large saute pan over high heat until very hot. Pour in the cooking oil and add the remaining ginger slices and green onions. Stir fry until fragrant, about 30 seconds. Add in the strained spare ribs and stir fry for 2 minutes in the fragrant oil.

Add 1 cup of the cooking liquid, the dark soy sauce and sugar. Simmer over a medium flame, spooning the liquid over the ribs, until the sauce has reduced to a heavy, syrupy consistency.

Add the vinegar and cook for another 1-2 minutes, until the flavors have fused. Off the heat, stir in the sesame oil.