Cut the vanilla pod lengthwise, scrape out the pulp, bring to the boil with the milk and cream. Cut the fat, nougat and couverture into pieces and melt in the cream while stirring. Stir the mixture very well until smooth, pour into a bowl and chill covered overnight. Pour the nougat mixture into a piping bag with a star-shaped spout and squirt into the metal capsules in a circle. Results in about 55-60 pieces