Peel and finely chop the onion. Clean and wash the broccoli and cut into florets. Peel and chop the broccoli stems. Heat the fat in a pot and fry the onion. Add broccoli and sauté briefly. Deglaze with broth and cook covered for about 15 minutes.
After half of the cooking time, lift out some florets with a skimmer. Puree the broccoli finely in the broth. Stir in the cream and sauce thickener and bring the soup briefly to the boil again. Season to taste with salt, pepper and sugar. Pour soup into cups. Add broccoli florets and flaked almonds