Place the beef back in the large pot, fill about 3 litre cold water. Add ginger, garlic, spring onions, cinnamon, star anise, bay leaves, soy sauce, sugar, beef stock cube and black pepper. Bring it to boil, once it start boiling, turn down the heat, close the lid and simmer with low-medium heat for 1.5 to 2 hours, until the beef is tender.