Wash the pork shank slices under running water.

Place the pork shank in a pot with water and vinegar.

Bring the mixture to a boil.

Reduce the heat to a simmer, cover the pot, and cook for 90-120 minutes until the pork is fork-tender.

Add the sago, onion, potato, garlic powder, salt, and pepper to the pot.

Stir the ingredients thoroughly.

Return the mixture to a boil, then reduce heat and simmer with a lid for 30 minutes.

Check that the meat is falling off the bone and the vegetables are cooked.

Ensure the sago is translucent and has thickened the sauce.

Transfer the stew to a serving dish.

Sprinkle lemon zest and chopped parsley over the stew.

Serve hot with rice, vegetables, and salad.