Place eggs, sugar and ovalette in a mixing bowl. Mix at high speed until batter is fluffy and white.
Pour in milk, plain flour, baking powder and vanilla flavour, mix at low speed until the batter well combined.
Divide the batter into 5 bowls. Add you favourite colour into different bowl and mix well.
Fill batter into different piping bags. Pipe the batter into the paper cups (3/4 full). Pipe dots on top by piping batter of different colours.
Steam at low/medium heat for 10 to 15 minutes or until cooked.