Steamed Sponge Cake
(Bolu Kukus)

  • 5 egg yolks
  • 4 egg white
  • 250 gram granulated sugar
  • 300 gram flour
  • tsp baking soda
  • 175 cc soda water (Sprite/7Up)
  • tsp vanilla
  • 1 Tbs cocoa for coloring

  • Cover approx. 20 tin cups used to steamed the cakes with parchment papers then put them into a steamer pot with boiling water.
  • Mix egg yolks, egg white, baking soda, sugar and vanilla until they make a smooth batter then put in turns, portion of the flour, portion of the soda water until all of them are used, mix well.  Take 5 Tbs of the batter and put it in a separate bowl.  Pour in the cocoa and mix well.
  • 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 is used up, 20 tin cups.
  • 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 if it looks like the above picture.

For 20 tin cup cakes

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