Egg yolks, egg whites, caster sugar and walnuts
In a food processor, Grind the walnuts with 2 tbsp of granulated sugar and the corn starch. This will prevent the walnuts from clogging
Zest the lemon
Mix the walnuts with the egg-sugar
Beat the egg whites and add in 3 times..FOLDING in the walnut mixture.
22 cm mould. Buttered, floured and lined with parchment paper
Put the batter in the mould the put in the oven
Bake 50 mins in a preheated oven 180 C
Serve as such or
Decorate with walnuts and icing sugar. May b it would better to cut it into parts while it is still warm.