Peel and finely chop the onion. Clean and wash the broccoli and cut into florets. Peel and slice the broccoli stems
Heat the fat in a saucepan. Sauté the onion in it. Add broccoli and steam briefly. Deglaze with 3/4 l water, bring to the boil. Dissolve broth in it. Cover and cook over low heat for 10-12 minutes.
Remove the soup from the stove and possibly take out a few broccoli florets with a skimmer. Finely puree the soup with a cutting stick. Stir in cream
Grate the cheese and, except for something to sprinkle, melt it in the soup while stirring. Season to taste with salt, pepper and nutmeg. Heat the broccoli florets in it again
Fry bacon in a pan without fat until crisp and crumble finely. Arrange broccoli cheese soup in deep plates. Sprinkle with pieces of bacon and remaining cheese