芋头海绵蛋糕

芋头海绵蛋糕

Ingredient：

 （A）

 500g optima flour

380g eggs

160ml water

 2 teaspoon Yam Essense

 1 teaspoon ovalet

（B)

150g melted butter

Method：

1。put ingredient （A）in a cake mixer

and

 beat for 10mins at high speed.

then add in ingredient (B)

and

mix well hand.

2.pour in a 10" round lined and greased mould.

3.bake for 40-45 mins at 180'c.