25g/1oz dried cranberries
2 oranges, finely grated zest only
150驳/5陆辞锄 plain flour, plus extra for dusting
100驳/3陆辞锄 caster sugar
50驳/1戮辞锄 cornflour
50驳/1戮辞锄 ground almonds
40g/1陆oz slivered pistachios or pistachios
150驳/5陆辞锄 white chocolate, cut into chunks
115g/4oz unsalted butter
1 small free-range egg, beaten