Wash the pumpkins, rub dry. Cut off about 1/4 of the pumpkins as a lid. With a ball cutter first remove the seeds, then spoon out the flesh (750-800 g; also from the lids) so that only a thin edge remains.
Peel and chop the onion, potatoes and carrots. Wash and chop the leek. Wash and halve the chilli, remove the seeds. Chop the pods. Heat oil in a pot. Sauté vegetables, potatoes and chillies for 1-2 minutes and season with salt and pepper.
Then deglaze with wine and simmer for about 2 minutes. Add the stock. Cover and simmer for 20-30 minutes. Roast pumpkin seeds in a small pan without fat, take out. Take 4 teaspoons of crème fraîche aside, add the rest of the crème fraîche to the soup.
Puree the soup and season to taste again. Pour soup into the hollowed-out pumpkins and garnish with crème fraîche, pumpkin seeds and pumpkin oil.