400g/14oz mixed berries, such as redcurrants, blueberries, raspberries and strawberries
1-2 tbsp elderflower cordial, preferably homemade
350g/12oz plain flour, plus extra for dusting
170g/6oz redcurrant jelly, to glaze
90²µ/3¼´Ç³ú caster sugar
40²µ/1½´Ç³ú cornflour
115g/4oz icing sugar, sifted
pinch salt
2 vanilla pods, split lengthwise
225g/8oz cold unsalted butter, cut into cubes
45g/1½oz unsalted butter, cut into small pieces
50ml/2fl oz double cream
1 free-range egg, plus 2 egg yolks, lightly beaten
6 egg yolks
450ml/16fl oz full-fat milk