Peel and dice the sweet potatoes and cook in a little water until soft.
Set aside four tablespoons of the coconut milk, bring the rest to the boil with the sweet potatoes, a little water, nutmeg, ginger and the vanilla pulp. Puree the mass and pass through a sieve. Heat the result again and simmer briefly. Season the soup with cinnamon, salt and sugar.
Serve the soup hot and garnish with a spoonful of the coconut cream.
If you like, you can also deep-fry sweet potato slices in vegetable oil for decoration. It is especially nice if the slices are cut from one side to just before the opposite edge before deep-frying.