4 large lemons, zest and juice only
225g/8oz plain white flour
2 tsp caster sugar
100²µ/3½´Ç³ú caster sugar
300²µ/10½´Ç³ú caster sugar
7 tbsp cornflour
pinch salt
110g/4oz cold unsalted butter, cubed
100²µ/3½´Ç³ú unsalted butter, melted
6 medium free-range egg whites
1 medium free-range egg yolk
6 free-range egg yolks