Creamy roasted garlic soup

This soup is delicious in itself but it is also a very good remedy against hangovers. Perhaps it is an idea to have some ready that you can simply warm up the morning after the evening in the festive season…
There are several versions of garlic soup, especially from the southwest of France where they have the tourin – with onions and eggs – or, in the southeast, in the aigo boulido of the Provence, with sage.
Here the garlic is first roasted in the oven and then blended with flour in a stock. Towards the end some grated cheese is added.
If you prepare the soup ahead of time, leave the cheese until the moment of serving.