Chop the dark chocolate and melt it in a bain-marie. Let it cool down. Work the soft #butter together with the sugar until creamy and lightly whipped. Add the egg yolks one at a time, continuing to work to mix them in. Add the cold, melted chocolate. Then add the crumbled #biscuits and stir gently with a spatula. Transfer the resulting mixture to a sheet of baking paper and form a sort of ‘sausage’ by rolling the paper around it. Close the ends like a candy bar and place your chocolate salami in the refrigerator for at least 6 hours.
When ready to serve, cut into slices and sprinkle with #frostingsugar.