Core the Hokkaido and cut into large pieces, peel and slice the carrots, then place in a 3 - 4 liter saucepan.
Cut the leek lengthways, wash and cut the whites into slices. Peel 1/4 of the dried chilli pepper, about 2 teaspoons of coriander powder and about 1 - 2 cm of fresh ginger tuber and cut into slices. Add 1 - 2 teaspoons of butter for vitamin absorption and flavor. If you don`t like that, take some oil. Top up with approx. 400 - 500 ml vegetable stock and simmer everything over low heat.
The Hokkaido with shell disintegrates completely after a while. When the carrots are tender, puree everything with a magic wand. Season to taste, add water and season with salt.
If you like, you can round off the soup with a dollop of sour cream or sour cream.