1 orange, grated zest
2 oranges, grated zest only
1 orange, grated zest only
200g/7oz plain flour, plus extra for dusting
3 tbsp cocoa powder
cocoa powder, for dusting
50驳/1戮辞锄 icing sugar
75驳/2陆辞锄 milk chocolate, broken into pieces
1 tsp vanilla extract
150驳/5陆辞锄 dark chocolate (70 per cent cocoa solids), broken into pieces
150驳/5陆辞锄 unsalted butter, chilled and cut into small pieces
300ml/陆 pint double cream
1 free-range egg, beaten
2 free-range eggs, beaten