Line your cupcake moulds with cupcake liner. This recipe makes about 11-12 cakes.
Prepare and combine all ingredients A in a big bowl/mixing bowl. Set aside.
Meanwhile prepare your steamer. Make sure the steamer is hot with lots of steam by the time you steam the cake and please cover the lid with clean kitchen towel to prevent any water dripping to the cake.
Using your electric mixer, mix the ingredients A in low speed first to combine. After that, increase the speed to high and continue mixing for about 15 minutes. The batter will be very thick and white as the photo.
Divide this batter to 3 portions (red, white, light green). Add food coloring as needed. Note: for dark green, I do it at the last step with remaining light green batter by mixing the light green batter with tiny drop of black coloring. I only have super black so mine turned very dark.
The biggest batter will be for the red watermelon flesh. Add few drops of red food coloring and 2 tbsp of black sesame seeds to the red batter. White batter: without any food coloring. Green batter: add a drop of green coloring.
Put green and white batter in piping bag
Fill in the cupcake mould with red batter first, about 3/4 of the height
Continue with thin layer of white.
After white batter, continue with light green batter.
Once you cover all the cake with light green batter, add a tiny drop of black coloring to the light green batter to make a dark green batter. Or you can add more green coloring too.
Lastly, add dark green lines at the top of the cake. Use toothpick to create some zigzag pattern
Steam in high heat for 10-12 minutes. Please do not open the steamer lid to check your cake before 10-12 minutes. And finally, your steam cake will bloom beautifully and they are ready to serve!
