Steamed Green Tea Cake

Copy from : Frozen wings

Recipe ( from all recipes.com with some modifications ) 7 " round cake tin
125gm cake flour
1/2 tsp baking powder
1 1/2 tsp green tea powder
4 egg yolks
150gm sugar
1/2 tsp vanilla essence
1 tbsp plus 2 tsp water
1 1/2 tbsp vegetable oil
4 egg whites
1tsp cream of tartar
1 tsp black sesame seeds

Method:
1. Sift the cake flour, baking powder and green tea powder together into a bowl. Use a fork to stir to mix. Set aside.
2. In another large bowl, combine egg yolks, sugar, vanilla and water. Using an electric mixer, beat on medium speed until volume almost tripled. Fold in the flour mixture, mixing until just combined. Add in the oil.( i only added the oil here after finding the paste a little thick, you can add in the oil into the egg yolks mixture before beating). Throw in the black sesame seeds.
3. In another bowl, beat the egg whites together with the cream of tartar till stiff. Gently fold egg whites into the egg mixture. Pour batter into a cake pan.
4. Place cake in a steamer and steam for 20 minutes or until a skewer inserted in the center comes out clean. Let it cool down and unmould from tin.