How to Make It
Preheat the oven to 425°. In a large saucepan of salted boiling water, blanch the turnips until barely tender, about 1 minute. Using a slotted spoon, transfer the turnips to a baking sheet to cool slightly. Add the parsnips and carrots to the saucepan and bring to a boil, then simmer until barely tender, about 2 minutes; transfer the carrots and parsnips to the baking sheet. Add the beets to the saucepan and simmer until just tender, about 5 minutes; transfer to the baking sheet and let cool slightly.
In a large bowl, toss the vegetables with the olive oil, thyme, sage and rosemary and season with salt and pepper. Spread the vegetables in an even layer on 2 large rimmed baking sheets. Roast for 20 to 25 minutes, until browned in spots. Transfer the vegetables to a platter. Drizzle with the vinegar and tamari, season with salt and pepper and toss to coat. Serve.