The best cherry & chocolate cheesecake

INGREDIENTS

• 150 g unsalted butter, melted, plus extra for greasing
• 300 g dark chocolate digestives
• 100 g golden caster sugar
• 3 tablespoons cornflour
• 900 g full-fat cream cheese
• 2 large eggs, preferably free-range or organic
• 100 ml double cream
• 1 orange
• 50 g good-quality dark chocolate (70% cocoa solids), broken into small pieces
• 300 g dried sour cherries
• 3 heaped tablespoons caster sugar
• 1 stick cinnamon
• 1 vanilla pod, halved lengthways
• 1 splash rum, brandy or grappa
• 100 g good-quality dark chocolate (70% cocoa solids), broken into pieces
• 200 ml single cream