Combine beef & ginger and allow to marinate at least 1 hour. Place chiles, garlic, shallot & water in blender, blend until smooth. Heat oil in large pot. Add paste, cook 2 minutes. Add beef (without ginger) sugar, fish sauce, soy sauce, salt, pepper & broth. Boil, reduce heat, simmer 40 minutes. Add coconut & tamrarind, simmer 20 mintues. Note: The sauce should be relatively thick if it is not continue to cook. Garnish with cilantro