Bring the milk to the boil together with the sugar, raisins and vanilla pod and boil for one minute.
Remove the vanilla pod and stir in the fine wheat semolina. Reduce the heat and cook the semolina with a spatula or whisk until the mixture thickens.
Remove from the heat and transfer the mixture into a glass bowl or container to cool until completely set.
Prepare the caramel sauce
Place the sugar and a small amount of water (50ml) into a saucepan.
Bring to the boil and cook until you obtain a dark amber colour. Do not stir the caramel but gently swirl the pan to heat the sugar evenly.
When the caramel just starts to smoke (168°C -170°C), remove it from the heat and add the remaining water to stop the cooking process. Let the caramel cool.
When the semolina pudding is cold and completely set, flip it over on a serving plate and pour the caramel sauce over it.