Scrub the Celeriac roots to get all the hidden dirt off.
Put Water, Salt, and White Wine Vinegar in a Medium Saucepan. Add the cleaned Celeriac roots. The water should cover the celeriac knobs.
Bring the water to a boil over medium high heat, then reduce to a low boil.
While the Celeriac is cooking, mix the all of the dressing ingredients in a medium bowl. Set aside.
Cook the Celeriac knobs until a knife goes in fairly easily. (At least 45 minutes... maybe longer depending on the size of the root knob).
Remove the Celeriac from the water.
When it's cool enough to touch, but still warm, peel the bumpy skin off of the knobs.
Cut into wedges, than into thin (1/4 inch) slices
Toss in dressing while warm.
Let cool in the refrigerator, toss occasionally to let the dressing/ marinade coat every slice to get the flavor in.
Taste for salt before serving.