Combine beef shank, onions, and water in a large cooking pot. Let the liquid boil. Cover and simmer for 3 hours (Note: Skim off the scums and oil during the process. You will have to do this to lessen the guilt . You will also need to add more water or beef broth as needed).
8 lbs. beef shank, 2 bunches green onion, 3 quarts water
Season it with beef powder, fish sauce, and ground black pepper.
2 tablespoon beef powder, Fish sauce and ground black pepper to taste
Add the Napa cabbage and green onions. Cook for 3 minutes.
1 lb. Napa cabbage, 2 bunches green onion
Transfer to a serving bowl. Serve with your favorite condiments (Note: I like it with a small saucer of fish sauce, crushed fresh birds eye chili pepper, and calamansi).