Clean and wash broccoli and cut into florets. Peel and chop the thick broccoli stems. Peel and finely chop the onion
Heat the fat in a saucepan. Sauté the onion in it. Add a good 3/4 l water, broth and broccoli, except for a few small florets, and bring to the boil. Cover and simmer for 10-15 minutes.
Peel, wash and cut the carrot into very fine strips
Finely puree the soup with a hand blender. Add half the cream. Season to taste with salt, pepper and nutmeg. Simmer carrot strips and remaining broccoli for 3-5 minutes. Whip the rest of the cream until semi-stiff and carefully fold in