all fat from beef and rinse it thoroughly. Add vinegar, ginger, black
pepper, lemon juice and salt and mix well. Prick with a fork from all sides
and set aside for two hours. Put in a large pan, cover with water and let it
cook for 3-4 hrs, on medium heat. When water begins to dry, pour oil on it
and stir a little, cook until beef is tender. It should only need about 20-30 minutes.