Tasty Meatballs Soup

"This meatballs soup recipe is a nice, comforting soup that has been soured with a generous shot of fresh lemon juice or homemade borsch. Pork and rice meatballs bring so much savory flavor and substance to the simple base of vegetable broth. Is there anything better for a hungry, cold and tired person than a hot, tasty, comforting soup? This meatballs soup recipe is one of our most favorites! We are sour soups people, we simply must have a bowl of sour soup almost every day, the sourer the better! "