Hand whisk all ingredients (A) until evenly mix and put batter in the pipping bag.
Beat all ingredients (B) at medium speed for 3mins and set it aside.
Beat all ingredients (C) until medium foam. Fold (A) until evenly mix.
On the baking sheet, draw the pattern you desire and pour into the 12” x 12” baking tray.
Bake the 750g batter at 210°C for 15mins and let it cool.
Mix all ingredients (D) and wipe on the cake surface. Roll up to a swiss roll shape and let it set in the freezer for minimum an hour and it is ready to served.