Slice the beets into thin strips.
Peel the carrots and then grate them finely. Do the same for the celeriac.
Slice the onion into thin strips.
In a large salad bowl, combine all the vegetables.
In a small bowl, prepare the vinaigrette by mixing the lime juice, olive oil, honey, salt, and pepper.
Pour the dressing over the salad and toss gently.
Add the chopped walnuts and sprinkle with fresh herbs before serving.