Add meatballs and cook until ready for 20-25 minutes.
P.S. meatballs were prepared by me in advance and frozen, which is very convenient in order to save time. And they are prepared so:
ready stuffing combine with chicken egg, add salt, finely chopped onion, if desired herbs, knead until smooth, moisten hands with cold water (to avoid sticking stuffing) and make balls, which are then lowered into boiling broth or water. Cook meatballs for about 20 - 25 minutes.