Grandma's Giouvarlakia

Ingredients

• 500 g minced beef
• 1 egg
• 1 onion finely chopped
• 1/2 carrot grated (optional)
• 2-3 tablespoon(s) olive oil
• ¼ cup round grain rice
• 2 tablespoon(s) dill finely chopped
• 2 tablespoon(s) parsley finely chopped
• salt
• freshly ground pepper
• 1-1 ½ litre water or broth
• 2 bay leaves
• 1 carrot chopped
• 1 potato chopped
• 1 rib of celery chopped
• 2 eggs
• 1 level teaspoon(s) corn starch
• lemon juice, of 2 lemons