Ciorbă de cartofi (Potato Sour Soup)

Instructions

1. Fry the sliced onion in the oil for 4 minutes. Add the diced carrot and parsley root.
2. Add the potatoes cut into cubes, cover with water, season with salt and pepper, and add the bay leaf. Cook for 20 minutes.
3. Sprinkle with flour, stir, then pour in the vinegar and cook for 5 more minutes.
4. Whisk the yolks with the cream, temper with a little hot broth.
5. Off the heat, stir in the thickening, without letting it boil.
6. Sprinkle with lovage and chopped parsley, adjust the salt and serve hot.