Peel, wash and chop the potatoes. Peel and chop the onion. Clean and wash the celery. Put some green aside. Cut half the celery into pieces
Fry the onion in hot oil. Briefly fry the potatoes and chopped celery. Deglaze with 1/4 l water and bring to the boil. Stir in stock. Season with caraway seeds if necessary. Simmer covered for about 20 minutes
Stir in the milk. Puree everything finely. Cut the rest of the celery into thin slices. Add to the soup. Bring to the boil, cover and cook for about 3 minutes.
Dice the cheese. Melt in the soup while stirring. Season to taste with salt and pepper. Garnish with celery green
The "fat comparison" is also worthwhile for instant broths! 1/4 l vegetable broth (= 1 teaspoon) provides only 0.3 g fat, fatty broth (= 1/2 cube) provides 1.3 g