Romanian Meatball Soup (Ciorba de perisoare)

Name: Romanian Meatball Soup (Ciorba de perisoare)
Prep time: 20 min
Cook time: 25 min
Total time: 45 min
Ingredients: 400 g ground beef (14 oz or ground pork, a mixture of pork and beef or ground turkey); 50 g rice (1/4 cup (long grain or arborio)); 1 egg; 1 tbsp fresh parsley (chopped ); 1 tbsp fresh dill (chopped ); Salt and pepper (to taste); 3 tbsp vegetable oil (1/4 cup); 1 large onion (chopped ); 1 large carrot (grated); 1 parsnip (grated); 1 red bell pepper (chopped ); 1 tomato (chopped ); 1 tbsp tomato puree (or 100 ml tomato passata); 2 celery sticks (chopped); 2 litres vegetable or beef stock (2 quarts); 500 ml borș (2 cups or use the juice from one lemon); 3 tbsp chopped parsley (or a small bunch); 3 tbsp chopped lovage (or a small bunch (or substitute with celery leaves)); 2-3 tbsp lemon juice (for extra sourness)