Shanghai-style short ribs

- 1 lb pork short ribs (crosscut in 2 inch square)
 - 1 tbls fresh ginger (finely chopped)
 - 6 star anise 
 -  1/2 cup shao-xing rice wine  
 - 1/4 cup soy sauce  
 - 4 tbls brown sugar  
 - 2 tbls zhen-jiang rice vinegar 
 - 1 tsp cooking oil
 -  white pepper 
 - green onions (finely chopped)
 
- add oil to the wok over median heat, add ginger and star anise, fry for 2 minutes
 -  add short ribs to the wok and stir till the meat lightly brown
 - add rice wine, soy sauce, and brown sugar to the wok, add enough water to just cover the meat, turn up the heat to bring the liquid to boil 
 -  cover the wok and turn down the heat to the liquid slightly boiling, simmer for 90 minutes
 - remove ribs from the wok, discard the coking liquid 
 - heat a frying pan, add 1 tbls brown sugar. when the sugar melts, add vinegar to mix
 - add ribs to the frying pan, stir and mix for 5 minutes
 - sprinkle white pepper and green onions, mix and serve