" Vegetables are the food of the earth, fruit seems more the food of the heavens." (Sepal Felicivant)

November 15, 2008

Steamed Rainbow Sponge Cake (Bolu Kukus Pelangi)

This cake is very famous kind of steamed sponge cake in Indonesia. People usually call it Bolu Kukus Pelangi. Pelangi or rainbow is presented by its colorful batter. I’ve seen people add various food coloring such as red, green, yellow, and blue. But, I choose to make it not so colorful and add some raisins.


3 low cholesterol organic eggs
⅓ cups sugar
1 teaspoon baking powder
1 teaspoon cake emulsifier
½ cup wheat flour (medium protein/all purposes flour)
100 ml low fat milk
A drop of cocopandan pasta for red color as much as necessary
A drop of pandan pasta for green color as much as necessary
2 tablespoons raisin


Set the cake pan. Cover with thin layer of margarine. Set aside.
Set the steamer. Assure the steamer has enough steam before put the cake in.
Beat eggs and sugar until the sugar well dissolve and the color turn pale/white. Add cake emulsifier.
Add baking powder. Mix it until well improved or become smooth.
Set the mixer in low speed.
Add flour and milk little by little alternately. Mix it only for a while just to make sure the batter is mixed homogenously.
Separate the batter into 3 parts. Give part 1 the red color, part 2 the green color, and part 3 give it no color (I try to reduce using food coloring/additive).
Pour the part 1 into cake pan. Steam it for about 5 minutes in medium heat.
Pour the part 3 into it. Spread the raisin. Steam it for about 5 minutes.
Pour the last part, that green batter. Steam it again for about 20 minutes.
Turn off the heat. Take it out. Cool it in room temperature then unmold it
Slice it and ready to serve.

(fit for 8-10 slices)

If you can’t use glass steamer cover, you need to wrap the cover with a clean napkin to prevent water flecks drop onto your cake surface. The flecks will cause your cake surface become billowy.

Related Posting:

Steamed Sponge Cake (Indonesian Bolu Kukus)
Common Indonesian Flours Used for Daily Cooking and Baking
Making Cake, Tips I’ve Learned

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