425g tin pitted black cherries, drained (see Recipe Tips)
100驳/3陆辞锄 morello cherry jam
100驳/3陆辞锄 plain flour
250g/9oz caster sugar
60驳/2录辞锄 cocoa powder
2 tbsp icing sugar
100驳/3陆辞锄 dark chocolate, to decorate
150驳/5陆辞锄 butter, melted and cooled, plus extra for greasing
500ml/18fl oz double cream
6 free-range eggs