100²µ/3½´Ç³ú blueberries, fresh or frozen
fresh blueberries
1 tbsp lemon juice
200g/7oz plain flour, sifted
1 tbsp plain flour
1 tbsp caster sugar
55g/2oz caster sugar
40²µ/1½´Ç³ú ground almonds
40²µ/1½´Ç³ú icing sugar, sifted
85g/3oz icing sugar
100²µ/3½´Ç³ú butter, chilled and cubed
1 free-range egg, beaten