2 tbsp caster sugar
cocoa power, for dusting
150g/5oz icing sugar
1 vanilla pod, split, seeds scraped out
dark chocolate, grated, to garnish
200ml/7fl oz double cream, whipped until soft peaks form when the whisk is removed
500g/1lb 2oz mascarpone
50ml/2fl oz amaretto liqueur, or to taste
4 shots espresso, or a four-cup cafetiere of strong coffee
1 ready-made panettone, cut into1cm/陆in thick slices