Beat the egg whites until foamy, then add in sugar, continue to beat until stiff peak formed

In another bowl, beat the egg yolks with sugar until pale and fluffy

Gradually add the egg yolk mixture in the beaten egg whites, fold it gently

Sieve in flour and corn starch, fold it gently until everything combined

Fill the pipping bag, tip it with a scissors. Then pipe the batter into thick long line on parchment paper. Sprinkle some icing sugar on top

Then pop in preheated oven at 170C, for 12-15 minutes or until light golden.

Let it cool a bit then sprinkle more icing sugar on top. Enjoy!