This dish is named after a pear-shaped Chinese string instrument, the pei pa, and the recipe uses Chinese soup spoons to produce the same shape. The Chinese method of mashing or chopping some of the prawn meat to make a paste and beating it against a bowl is used to produce a slightly bouncy texture on the palate. The recipe is pretty straightforward, though you will notice the cooking time is quite precise.
Note Silken egg tofu is available from Asian grocers. Potato starch is available from Asian grocers and select supermarkets. Potato starch is available from Asian grocers and select supermarkets.