125 g (4 oz) unsalted butter, melted and cooled, plus extra for greasing
125 g (4 oz) Bournville chocolate, chopped
4 large eggs
125 g (4 oz) golden caster sugar
50 g (2 oz) self-raising flour, sifted
1 tbsp cocoa powder, sifted
75 g (3 oz) hazelnuts, chopped and toasted, plus extra to decorate
75 g (3 oz) morello cherries, drained, plus extra to decorate
75 g (3 oz) Bournville chocolate
2 tbsp Kirsch or brandy, plus extra for drizzling, optional
142 ml carton double cream, plus extra to serve