75g/2½oz almonds, roughly chopped
150g/5½oz caster sugar
2 tbsp cocoa powder
75g/2½oz hazelnuts, roughly chopped
1 tbsp icing sugar, to decorate
50g/2oz pistachios, roughly chopped
250g/9oz amaretti (crunchy ones) or rich tea biscuits
250g/9oz dark chocolate (minimum 70% cocoa solids)
100g/3½oz unsalted butter, softened
3 free-range eggs
2 tbsp amaretto liqueur