Peel, wash and cut the potatoes into small pieces. Cut the sausages into slices.
Heat butter in a large pot. Fry the sausages briefly while turning. Remove. Brown the diced ham in the cooking fat. Add 1 l water, stock, frozen soup vegetables and potatoes. Bring to the boil covered and simmer for about 15 minutes.
Wash the parsley and chop it roughly. Warm the sausages briefly in the soup. Season to taste with salt and pepper, sprinkle parsley on top.