First, clean the broccoli and wash well. Cut stems into narrow slices. Divide roses a little smaller. Peel and finely chop the onions.
Heat fat in a saucepan. Sauté onions and broccoli in it. Season with salt and pepper. Next, deglaze with water and bring to a boil. Cover and cook for about 10 minutes. Remove a few stem slices and roses and set aside.
Puree the remaining broccoli in the soup. Then mix in the sauce thickener and bring the soup to a boil. Season again. Finish with sour cream.
Serve the cream of broccoli soup in soup bowls or deep plates. Place broccoli set aside in soup cups. Serve dusted with paprika powder.