Lightly coat the container that you’ll be making this dessert in with oil (I used vegetable oil). This step is crucial, or else you won’t be able to unmold the whole thing by the end.
Sprinkle the gelatine onto the milk and briefly mix it together. Set aside to allow the gelatine to dissolve.
In a saucepan over medium heat, whisk the heavy cream and sugar together until almost boiling and small bubbles appear. Whisk in the gelatine milk mixture. Make sure there are no lumps.
Sieve the mixture so that it’ll be silky smooth. Set aside to cool for 5 minutes, and pour into a mold/container (make sure your mold is lightly coated with oil to unmold easily). Let it cool down to room temperature and then cover and refrigerate for at least 4 hours until it has set.