This is Watermelon Milk Powder: Just got news that PHOON HUAT (Singapore) sells this watermelon powder those that are used for Bubble Tea.
180 gm. Cornoil
160 gm. shortening - melted and cooled
200 gm. sweetened condensed milk
140 gm. fresh milk
700 gm. egg white (from 15 nos. of egg white)
180 gm. caster sugar
1 tsp. cream of tartar
280 gm. cake flour ) sift together
1 tsp. baking powder )
200 gm. watermelon powder (can cut down to 150 gm. to 180 gm.)
Few drops of red colouring
60 gm. pitted prunes - slice thinly into small pieces
20 gm. melon seeds
50 gm. vanilla ice-cream powder
few drops of green colouring
(1) Mix corn oil, melted shortening and condensed milk in a big mixing bowl. Add in fresh milk and mix thoroughly till evenly mixed.
(2) Whisk egg white till slightly frothy, pour in sugar gradually and whisk till soft peaks form. Fold egg white alternately with flour mixture into the oil mixture till finished.
(3) Divide batter into the following:
400 gm. batter, mix with vanilla ice cream powder and green colouring, then subdivide into 2 portions again.
600 gm. batter - subdivide into 2 portions, each 300 gm. batter. Leave it uncoloured.
For the remaining batter, add in watermelon milk powder and a few drops of red colouring and subdivide equally into 3 parts. Divide the sliced prunes and melon seeds into 3 parts and mix each part into the watermelon batter.
(4) Grease and line an 8" square tray.
(5) Pour in one part of the green portion and level it. Steam each layer for 15 mins.
(6) Next pour in the white uncoloured portion and steam for another 15 mins.
(7) Next pour in the red portion and steam each layer for 15 mins, making a total of 3 red layers.
(8) Next, pour in the 2nd uncoloured portion on top of the red layer and steam for another 15 mins.
(9) Last, spread the green layer and steam for another 15 to 20 mins. till well cooked.
(10) Cool on wire rack and slice like wedges , shape of a watermelon.
*This recipe is adapted from the book "Layered Cakes", author: Vickie Chieng, a wonderful baker and a wonderful friend of mine. I have made some alterations to the recipe. Finding it too oily, I've cut down the amount of oil in the cake. The watermelon milk powder is pink in colour, is slightly sweet and has a very nice watermelon smell and taste and I really don't know what we can substitute for this.