WHEAT FREE SPONGE CAKE

when i was surfing the internet ,came across this recipe from ancoo journal,is use three simple ingredients that I have,goes for it.

WHEAT FREE SPONGE CAKE
Ingredients;
3 gg (65g)
1/2 cup (110g) castor sugar
3/4 cup (110g ) cornflour,sifted twice
2tsp vanilla
Method;
preheat oven to 180c.grease with butter,20cm/8inches round cake pan;line base with baking paper.
Beat egg with 2 tsp vanilla at medium highe speed for about 10min or until thick and creamy.gradually add sugar,beating until dissolved between additions at medium speed.
Sieve in the cornflour little by little for the third time and fold well in with a rubber spatula.
pour mixture into pan and spread evenly,bake for about 20 min or skewer inserted into the cake comes clean.Turn sponge cake onto a wire rack to cool.