Steamed Zebra Cake - Merry Christmas To You!

Christmas is here! What a joyful day! I just want to thank you Lord for the gift of your Son, the greatest gift of love!
On this Christmas day, I would like to share this simple steamed cake recipe for you. Oh btw, it is my husband's favorite cake...:)

Steamed Zebra Cake ala Ny. Liem
Ingredients:
I:
425ml egg white
200g fine granulated sugar
1/4 tsp salt
10g emulsifier/ovalette
1/2 tsp vanilla

II: mixed, shifted
200g all purpose flour
1/2 tsp baking powder

III:
1 tsp rum
50g margarine (melted)

IV:
1 Tbsp chocolate paste

Directions:
Beat egg white until foamy, and then gradually add sugar while mixing. Add salt, emulsifier, vanilla, and continue to mix until fluffy and thick. Add ingredients II little by little and mix well. Add ingredients III and mix well again. Separate 1/4 of the batter and mix it with IV. Pour into round baking pan (I use round 9inch cheese cake pan) which was layered with parchment paper, the white and chocolate batter alternately. Steam for 45min.