Dice all ingredients. Fry the pumpkin together with the onion in coconut oil for a few minutes and add the ginger. Season with salt, pepper and chilli. Deglaze with the vegetable stock and cook for about 15 minutes. Add the coconut milk, curry paste, mango, lemongrass powder, spring onions and banana and bring to the boil briefly. Now puree everything and add the kaffir lime leaves to the soup for about 10 minutes. Serve warm.