Steamed Sponge Cake

• egg yolks↗5
• egg whites↗4
• g granulated sugar↗250
• g flour↗300
• teaspoon baking soda↗1⁄2
• ml soda water (Sprite/7Up)↗175
• teaspoon vanilla↗1⁄2
• tablespoon cocoa↗1

Step-by-step instructions

1. 1

   Cover approximately 20 tin cups used to steamed the cakes with parchment papers then put them into a steamer pot with boiling water.

2. 2

   Mix egg yolks, egg white, baking soda, sugar and vanilla until they make a smooth batter then put in turns, ½ portion of the flour, ½ 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 ...

3. 3

   Pour the white batter into the tin almost to the top then ...

4. 4

   Close the steamer lid, let it steamed ...

5. 5

   For 20 tin cup cakes.