Clean the leek, wash it thoroughly so that the sand is well removed and you will not have any annoying grinding between your teeth later on. Then cut the leek into rings. Peel and finely chop the onion.
Peel and finely chop the garlic.
Heat 2 tablespoons of oil in a large pot. Crumble the minced meat into it and fry it for about 5 minutes until crumbly brown. Season well with salt and pepper. Take out.
Add 1 tablespoon of oil to the pot. Sauté the leek with onion and garlic in the frying fat while stirring for 2-3 minutes.
Dust with flour and sauté lightly for 1-2 minutes while stirring. Deglaze with wine and about 800 ml hot water. Stir in stock. Bring everything to the boil, simmer for 8-10 minutes.
Stir cream and cheese into the soup one after the other and stir until the processed cheese has combined with the liquid. Simmer the soup for another 5 minutes.
Stir in the mince. Season soup with salt and pepper. What a classic!.