Knead the parmesan with breadcrumbs, eggs and nutmeg to a dough. Season to taste with salt. Divide the dough into 10 parts and form a roll approx. 1 cm thick from each part. Cut each roll into 1/2 cm wide slices.
Bring the chicken stock to a boil and add the dough slices. Remove from the fire immediately and let it steep for about 5 minutes. Serve with chopped chives.