Braised Pork Ribs with Sea Cucumber

Ingredients
1 packet frozen fresh sea cucumber - washed and cleaned, cut into big chunks
2 dried shitake mushroom - soaked and cut into quarters
1 carrot - peeled and cut into chunks
1 lb pork ribs
1 star anise
2 cloves
2 cloves garlic - lightly mashed
few slices ginger 
1 tbsp oyster sauce
1 to 2 tbsp vegetable oil
1 cup water

Seasonings for pork rib
1 tbsp soy sauce
1 tbsp shaoxing wine
pinch of salt
dash of pepper
2 tsp cornstarch
1 tsp sesame oil

Method

1. Marinate pork ribs for 1 hour or more.
2. Heat up oil in pressure cooker.  Fry garlic and ginger for a while. Add oyster sauce, pork ribs and mushrooms and fry to mix well.  
3. Add star anise, cloves and water and pressure cook for 20 mins or till meat is tender..
4. Release pressure and add carrot and sea cucumber and cook till desired tenderness.