Trim
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.