50驳/1戮辞锄 custard powder
175g/6oz plain flour
40驳/1陆辞锄 icing sugar
1 tbsp ground pistachios (see recipe tip)
small pinch finely ground saffron (see recipe tip)
small pinch salt
100驳/3陆辞锄 white chocolate, melted
200g/7oz unsalted butter, very soft