Quarter the pumpkin, remove seeds, peel and chop. Peel and chop onions
Heat the fat in a large saucepan. Fry the onions in it until transparent. Steam the pumpkin briefly. Sprinkle with flour and sweat. Stir in stock (or 800 ml water and broth). Add wine and cream. Season. Bring to the boil, cover and simmer at low heat for 25-30 minutes
Roast the seeds without fat, remove. Puree the pumpkin in the soup and season to taste. Serve with crème fraîche, oil and seeds