Sieve the plain flour, baking powder and sugar together.Add the egg white and gradually stir in the milk water.Form into a dough, knead until smooth.Rest for 20 minutes.Divide into 6 portions.

• 把面粉、发粉及糖同筛大碗内，加入蛋白后徐徐拌入奶水，拌成团后搓至滑身，待20分钟，分成6等份。