Rinse approximately 2 pork knuckles and put into a large pot
Add 2 slices of ginger, 2 stalks of green onions, 2 tbsp Shaoxing wine and enough water to cover the pork knuckles
Bring water to a boil. Let it boil for 5 minutes
Remove pork knuckles from the water and rinse with cold water. Let cool in a colander. Water, ginger and green onions may be discarded
When pork knuckles have cooled, remove hairs with a tweezer
Slice 4 slices of ginger, coarsely chop 6 cloves of garlic and 1 shallot. Prepare 5g of dried chilies
Prepare 3 star anise, 1 cinnamon stick, 4 bay leaves and 1 caoguo. Preferably, place into a spice bag so that it’ll be easy to fish out
In a braising pot, heat on medium high heat, add 2 tbsp oil, add ginger. Fry until ginger is golden
Add garlic, shallots and dried chilies, fry until aromatic
Add pork knuckles, 2L water (or enough to cover the pork knuckles), 6 tbsp light soy sauce, 6 tbsp dark soy sauce, 50g rock sugar, 3 tbsp peanut butter, 3 tbsp Shaoxing wine, 3 tbsp oyster sauce, and prepared spice bag
Bring contents to a boil and fish out the cinnamon and caoguo They’re fished out now so that there is only a subtle herb flavour. If you like the taste stronger, you may keep it in longer. If you leave it for longer, beware that caoguo may leave a bitter after taste especially if you’re making less content
Adjust heat to medium-low and let it simmer for 2 hours, stirring occasionally This is a medium simmer where you should see gentle bubbles forming. If foam forms, remove with a skimmer
After 2 hours, remove the pork knuckles and remove the bone. The bone should be fairly easy to remove. You may cut a vertical slit on the knuckle and remove the bone. Or, you may hold down the knuckle with one hand and pull the bone with the other so that you maintain a ring-like piece of knuckle
Remove all the solids from the sauce
Combine 2 tsp corn starch and 1 tbsp water. Mix well and drizzle slowly into the sauce. Stir mixture until thickened
Optional: blanche some bok choy to place around the plate
Put pork knuckles on the plate, either whole or cut into pieces, pour sauce on top
Serve with rice, noodles or steamed buns