Chop the chocolate and melt it over a warm water bath. Leave to cool at a lukewarm temperature. Peel oranges and grapefruit so that the white skin is completely removed. Remove the fillets with a sharp knife between the parting skins. Chop the pistachios and almonds.
Whip the cream until stiff. Fold 2 tablespoons of cream into the chocolate, stir in liqueur. Then fold in the remaining cream. Layer cream with citrus fillets, almonds and pistachios in 4 dessert glasses. Chill for 1-2 hours
1 hour waiting time