For the meat balls put all the ingredients in a bowl and mix with your hands. Form little balls out of them, around 2 cm/1 inch diameter each. It will be around 50 little meatballs. Lay them on a plate, so they don't stick to each other. set them aside.
For the soup in a big pot put some olive oil, add the carrots, celery and onion with the garlic, stir and sauté. Add the chicken broth and let it cook for a few minutes. Then add the meatballs and – it you want pasta in the soup – the Dadini. Let it cook until the meatballs are ready (around 10 minutes).
Serve hot and garnish with some parmigiano cheese.
If you have guests who like the soup with pasta, cook the pasta separately and add in every bowl some pasta before filling with the soup. Works perfect!