150²µ/5Β½΄Η³ϊ fresh cherries, cut in half, stones removed
110g/4oz plain flour
1 tsp baking powder
250g/9oz dark soft brown sugar
1-2 tbsp cocoa powder, for dusting
350g/12oz dark chocolate (minimum 55% cocoa solids)
150²µ/5Β½΄Η³ϊ white chocolate, roughly chopped
250g/9oz unsalted butter, plus extra for greasing
3 large free-range eggs