"Create a detailed recipe for Sausage and Bean Stew serving 4, including sautéing chopped onion, 2 chopped celery stalks, and chopped garlic cloves in sunflower oil; adding chestnut mushrooms and 8 chopped sausages, cooking until browned; then adding 2 drained cans of cannellini beans and 2 cups vegetable stock, simmering until thick; serve hot with sourdough bread."