Melt gently the butter in a saucepan. Add the sugar and cocoa powder.
When the sugar is melted, add the egg and vanilla. Stir for 2-3 minutes. Before it boils, turn off the heat.
Coarsely crush the biscuits then add to the mixture. Add the ginger and dried fruits, then gently stir.
Put a large piece of baking paper on a clean surface and sprinkle half of the coconut over it.
Spoon half of the mixture in the middle and form a 30 cm long log and roll this in the desiccated coconut to cover all over. Wrap with clingfilm, closing off the ends tightly.
Repeat with the remaining mixture.
Put the two salamis in the refrigerator and chill for at least 4 hours.
Serve it sliced.