Meanwhile, add the celery stalks, onion, parsnip, and vegetable stock to a medium pot. Bring to boil over high heat, then cover and simmer over low heat for 15 minutes. Transfer the roasted cauliflower and the soup into the blender and pulse to obtain a creamy liquid. Serve warm and garnished with caraway.
Find it online: https://detoxdiy.com/roasted-cauliflower-soup