Mix 4 tablespoons of milk with the pudding powder. Boil up the rest of the milk. Add the mixed powder and boil thoroughly while stirring. Remove the pot from the stove. Stir in sugar and egg yolk and let it cool down.
Meanwhile, roast the almonds in a dry pan and fold them into the pudding, using only 2 tablespoons. Whip the cream until stiff and fold into the cooled mixture. Pour cream into glasses and chill.
Serve decorated with remaining almonds and chocolate flakes.