Giouvarlakia Meatball Soup

Ingredients

• 500 g beef mince
• 1 onion (grated)
• 1 garlic clove
• 60 g calrose rice (οr short grain)
• 1 handful parsley (chopped)
• 2 egg whites
• 1 tbsp olive oil
• 1 tsp salt
• ¼ tsp pepper
• 2 l water
• 1 carrot
• 2 potatoes
• 1 tbsp salt
• 2 egg yolks
• 2 tbsp cornstarch
• 60 ml lemon juice (about 2 lemons)