1. Start by peeling the carrots and turnips, then cut them into similar-sized pieces for even cooking.
Slice the onion and chop the garlic.
2. In a large saucepan or Dutch oven, heat the olive oil over medium heat.
Add the onion and garlic, then sauté until they become translucent.
3. Add the carrots and turnips, then mix well to coat them with oil.
Season with salt, pepper, and a pinch of cumin.
4. Pour the vegetable broth into the saucepan, cover, and simmer over low heat for about 20 minutes, until the vegetables are tender.
5. - For a creamy soup, blend everything with an immersion blender.
- For a more rustic side dish, lightly mash the vegetables with a fork or leave them whole.