Dice the couverture and nougat. Warm up the cream. Melt the chocolate and nougat in the cream. Remove from the heat and chill. Chop the nuts and roast them in a pan without fat for about 5 minutes while turning.
Whip the cooled canache with the whisk of the hand mixer until creamy. Set aside 1 tablespoon of nuts for decorating. Fold the remaining nuts into the cream. Pour the cream into dessert glasses and decorate with nuts and rose petals