Clean and wash the leek and cut into fine rings. Peel, wash, quarter and cut carrots into small pieces.
For the topping, heat 2 tablespoons of oil in a large pot. Fry the minced meat, 2 tbsp leek and carrots for about 5 minutes, turning them over. Season with salt and pepper. Take out.
Heat 1 tablespoon of oil in the frying fat. Fry the rest of the leek and carrots for about 5 minutes. 1 1⁄2 Pour on 1 l water, bring to the boil, stir in stock and simmer for about 10 minutes.
Grate the cheddar and stir into the soup with the processed cheese until the cheese has melted. Simmer for another 5 minutes. Season soup with salt and pepper. Wash and chop the parsley. Add to the soup with the chopped mixture.