6 lemons, zest and juice
225g/8oz plain flour
250g/9oz caster sugar
225g/8oz caster sugar
65g/2¼oz cornflour
2 tsp cornflour
45g/1¾oz icing sugar
175g/6oz butter
1 large free-range egg, beaten
4 free-range egg whites
6 free-range egg yolks