Traditional Greek Meatballs Soup in Egg-lemon sauce / Youvarlakia Avgolemono soup

A hearty and delicious winter soup, and a classic Greek comfort food. It's really hard to describe the deliciousness of this soup.
The beef meatballs mixed with all these herbs, cooked in vegetable broth and then... the egg-lemon sauce... Oh my! It's a match made in heaven that you should definitely try out! :)