Boil beef in water and salt for 1 hour. Place remaining ingredients except the scallions and rice in the blender. Process to a paste. Transfer to a frying pan and saute for 6 minutes. Combine shallot mixture with the beef. Simmer for 1 hour. Serve with a scoop of rice in the bottom of a soup bowl, ladle in some of the beef and sprinkle with scallions.