Divide bean paste into 8 equal portions and roll into balls.
Sift cornstarch and flour together.
Beat egg whites in a clean bowl, and beat until it stands firm. Add in flour and cornstarch mixture a little at a time. Stir until smooth paste forms.
Heat a wok full of oil, coat bean paste balls with some cornstarch, dip in egg white mixture, and spoon it up with a large spoon. Put into hot oil and deep fry until gloden brown.
Sprinkle some sugar on top and serve hot.