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
Cuisine: European, Eastern European
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 chopped parsley; 1 tbsp chopped dill; Salt and pepper to taste; 3 tbsp vegetable oil (1/4 cup); 1 large chopped onion; 1 large grated carrot; 1 grated parsnip; 1 chopped red bell pepper; 1 chopped tomato; 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