Bring the vegetable stock to the boil. When it boils, take the saucepan off the heat. First stir in mashed potatoes, then cream cheese with a whisk. Heat the soup again, then add the chives and season with a little salt and pepper.
Arrange the soup in soup plates or as a starter in cups and garnish with the Bündnerfleisch cut into strips and some chives.
If you are really hungry, simply bake a herb baguette with it; the soup is, however, very rich.