How to Make "Bolu Kukus"

Ingredients :

1. 5 eggs yolks
2. 4 eggs whit
3. 250 gram granulated sugar
4. 300 gram flour
5. 1/2 tsp baking soda
6. 175 cc soda water 9 sprite/7 Up)
7. 1.2 tsp vanilla
8. 1 tbs cocoa for coloring

Instructions:

1. Cover approx. 20 tin cups used to steamed the cakes with parchment paper then put them into a streamer pot with boiling water.
2. mix eggs yolks, eggs white, baking soda, sugar and vanilla until they make a smooth batter then put in turns, 1/2 portion of the flour, 1/2 portion of the soda water until all them are used, mix well. Take 5 Tbs of the batter and put in a separate bowl. Pour in the cocoa and mix well.
3. Pour the white batter  into the tin almost to the top then pour in 1-2 tsp of the cocoa batter on top. Do this until all the batter in us
   ed up, +/- 20 tin cups.
4. Close the steamer lid, let it steamed for +/- 20 minutes with high temperature. then Use low temperature for another 5 minutes. The cake is ready to serve.. ^_^