Combine the cream with the milk, the vanilla pod and the sugar (1) and cook to 50° C. Whisk the egg yolk with the sugar (2) add 1/3 to the previous mixture, mix well and add the rest . premix the stabilizer with the sugar (3), add the mixture and cook to 80°C to pasteurize. Leave to mature at 4°C. Churn the appareil in a ice cream machine and when taken out pour the melted chocolate on the ice cream to obtain stracciatella.