Step 1

Stir chocolate in a bowl over a saucepan of simmering water until melted (2-3 minutes). Cool briefly. Whisk cream in an electric mixer until soft peaks form. Add chocolate in a steady stream until combined. Divide among four 300ml serving glasses and refrigerate for at least 5 minutes.

Step 2

Combine cherries, sugar and orange rind and juice in a bowl, stir until sugar dissolves, and refrigerate for 10 minutes. Divide cake among glasses, top with cherries and crème fraîche, and serve topped with grated chocolate.