120²µ/4½´Ç³ú golden syrup
190²µ/6¾´Ç³ú plain flour, plus extra for dusting
1 tbsp icing sugar
pinch salt
90g/3¼oz unsalted butter, cold and diced
60g/2¼oz unsalted butter, cut into small pieces
custard, to serve
1 tbsp milk
75g/2¾oz strawberry or raspberry jam