Colorful Steam Sponge Cake (Bolu Kukus Mekar)

Beat eggs, egg yolk, and sugar with a mixer with high speed for 20 minutes. Change to low speed and gradually add the flour and milk mixed.
Mixed well. Divide the batter into 3 section/bowls. Dropped the food coloring into the batter, mixed well.

Boil the water into steaming pan on high heat. Make sure Wraps the lid with a kitchen clothes.

While waiting for the water boil, let's fill up the steam mold with a paper cup cake and fully fill it with the batter. Filled with 3different color in every cup. When the water has boiled, put the mold into a steaming pan. Cover and steam in high heat for about 20-25 minutes

Take off from the steam pan, and immediately transfer it to the plate and ready to served. Enjoy!!