Sorry I was making a cake!
I've made it three times. To be fair the best time I used potato flour. The first time I made it with corn flour it came out amazing. Really light and yummy. The last time I made it it came out like a dried flakey biscuit. We slapped loads of the filling in and ate it anyway. I think it's all about the whisking and keeping as much air in the egg whites while folding the other ingredients in. Think perhaps I was too heavy handed (cocky) the last time. It doesn't rise in the over so what ever volume you have is how it'll come out. Apart from if you over mix it then it come out flat.
It's not the easiest of cakes to get right my 3 times of making it in my experience.
Lemon Feather Cake
Ingredients:
3 eggs separated
5oz castor sugar
Grated rind of half small lemon
70g (2 and half oz) potato flour or cornflour
Filling:
150 ml double cream
150g lemon curd
To complete:
Icing sugar for dusting
You will need a 7 inch tin or deep cake tin. Greased and lined. Then dusted with castor sugar followed by potato flour.
Method:
Pre head oven to 180c 350f Gas mark 4. Beat egg yolks, castor sugar and lemon for 10 -15 mins until light and fluffy and pale and thick. Enough to leave a trail for 8 seconds when lifted. . Fold in the potato flour with a metal spoon. Whisk egg whites until stiff but not dry. Fold into the lemon mixture. Pour into the prepared tin and bake for 40 -50 mins or until firm to touch and puffed and golden.
Leave to cool before turning out. Cool on rack. To make the filling whip the cream, but not too stiff and fold in the lemon curd. Split cake with serrated knife. Sandwich the halves together with the filling. Dust top with icing sugar. Can be frozen filled.
Apologies again for my lateness in replying!