Peel and finely dice the onion and garlic. Wash the chillies, halve lengthwise, remove seeds. Chop the pod finely. Peel and wash the parsnips and cut them into sticks. Cut the mango pulp from the stone, dice the pulp on the skin (approx. 1 cm edge length), cut from the skin.
Melt butter in a pot. Add the onion, garlic, chilli, parsnips and half the mango and fry for about 2 minutes. Add turmeric and garam masala and sauté briefly. Add tomatoes, coconut milk and stock and simmer over medium heat for about 8 minutes.
Add the remaining mango about 3 minutes before the end of the cooking time. Season soup with salt, pepper and sugar. Wash the chives, dab dry and cut into small rolls, except for a little garnish.
Arrange the soup in cups, sprinkle with chives and garnish.