1. In a big cooking pot, pour in water and bring to a boil
2. Put-in the beef shank followed by the onion and whole pepper corn then simmer for 1.5 hours (30 minutes if using a pressure cooker) or until meat is tender.
3. Add the corn and simmer for another 10 minutes
4. Add the fish sauce, cabbage, bok choy , and green onion (onion leeks)
5. Serve hot. Share and Enjoy!