STEAM SWEET POTATO CAKE

INGREDIENTS:

6 Egg white                                             160g        - flour

1 Egg yolk                                                140g       - castor sugar



80g - butter(soften)                                   1/2tbsp  - castor powder

1tsp - baking powder                                220g     - purple & orange color sweet potatoes
                                                                                 (cut into small cubes)                                




METHOD:


1) Beat egg white and sugar until creamy.


2) Add egg yolk and castor powder, stir well.


3) Add butter and flour, stir well.


4) Add sweet potatoes and pour batter into a greased baking tin.


5) Bake at 170degree for 40 - 45 minutes.