Steps
1. Soak gelatin sheets in cold water for 10 minutes.
2. Core and peel the apple, then slice into thin, uniform rounds.
3. Melt butter in a saucepan, add star anise, cinnamon, and cloves, then add brown sugar and calvados and reduce to a syrup consistency.
4. Dip apple slices in the spiced syrup and arrange in a circular mold.
5. Melt dark chocolate and temper carefully, then combine with softened gelatin and fold in whipped cream to form a mousse.
6. Pour chocolate mousse over apple slices in the mold and refrigerate for 4 hours to set.
7. Once set, unmold carefully onto serving plates.
8. Garnish with toasted almond slivers and edible gold leaf before serving.