This is the old world way to enjoy this great vegetable. Vinaigrette 1 tablespoon stone ground or Dijon mustard 2 tablespoons red wine vinegar 1 garlic clove, minced 1 tablespoon red onion, minced Salt and Fresh Pepper 1/3 cup Olive oil 2 tablespoons sour cream Add vinegar, garlic, onion and salt to a bowl and let sit for 15 minutes. Add remaining ingredients and whisk together. Salad 1 celery root, thickly peeled and sliced into eighth-inch rounds and then cross-ways into matchsticks (julienned) 1 large tart apple peeled, cored, and sliced thinly Bathe celery root in boiling water for 1 minute (start counting immediately, don’t wait for reboil. Remove and rinse with cold water. Dry thoroughly and toss with remaining ingredients and vinaigrette.