1 unwaxed lemon, finely grated zest only
150ml/¼ pint lemon juice
250g/9oz plain flour, plus extra for dusting
1 tbsp caster sugar
325²µ/11½´Ç³ú caster sugar
225g/8oz caster sugar
80²µ/2¾´Ç³ú cornflour
pinch salt
125²µ/4½´Ç³ú butter, cut into cubes
80²µ/2¾´Ç³ú unsalted butter, cut into cubes
3 large free-range egg whites
2 large free-range egg yolks
4 large free-range egg yolks