150²µ/5½´Ç³ú plain flour, sifted, plus extra for dusting
60²µ/2¼´Ç³ú caster sugar
120²µ/4¼´Ç³ú caster sugar
225g/8oz flaked almonds
75²µ/2¾´Ç³ú butter, chilled
120²µ/4¼´Ç³ú butter
1 free-range egg yolk
4 tbsp milk