To serve, turn the semifreddo out onto a serving platter and carefully remove the cling film. Pour the cooled chocolate over the top, sprinkle with the toasted hazelnuts and serve in generous slices.
This dessert is light, creamy and easy to make and can be prepared well ahead of time. Just whip it out of the freezer 10 minutes before slicing or scooping. I like to add a little extra Grand ...