Heat oil over medium heat in a large pan and add the onion. Sauté for 3–4 minutes, stirring frequently.
Add the carrots, potatoes, celery, garlic, and all the herbs and spices. Sauté for a further minute, then add the vegetable broth and bring to a boil over high heat.
Reduce the heat and cook for about 5 minutes over low-medium hea