For the red layer of gelatine soak in cold water. Bring the juice, sugar and lemon zest to the boil, remove from the heat. Squeeze the gelatine, dissolve in the juice. Add the red wine and pour into four glasses (each containing approx. 1/4 litre), place the glasses at an angle to cool. Let the jelly set for 1 1/2 hours. For the white layer soak the gelatine in cold water. Cut the vanilla pod open lengthwise and scrape out the pulp.
Bring the vanilla pulp and pod, milk, cream and sugar to the boil, remove from the heat. Squeeze the gelatine and dissolve in the vanilla milk. Let it cool down. Remove the vanilla pod. Pour the cooled vanilla milk onto the red jelly. Refrigerate the glasses upright for at least 1 1/2 hours. Decorate with mint