Wash and clean pork knuckle, remove hair. Place ginger slices, green onion into a large pot of boiling water, blanch for 5 minutes, remove and pat dry.
Rub pork knuckle skin and dark soy sauce and let it sit for 30 minutes.
Bring all the marinade ingredients to a full boil, pour the sauce into the Panasonic Electronic Pressure Cooker. Add pork knuckle and close the lid firmly. Set "High" pressure for 40 minutes, press "Start".
Once the pressure indicator pin has dropped, open the lid.
Make 500ml gravy in the Panasonic Electronic Pressure Cooker. Select "Slow Cook" and set "High". Pour over braised pork knuckle and serve hot.
Tips
To make the pork knuckle more tasty, marinade the pork knuckle overnight before cooking.
For a pork knuckle with bone, it will take more time.