POTATO AND CELERY ROOT MASH

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Potato and Celery Root Mash image

This mash gets a punch of flavor from freshly grated horseradish. Use a combination of potato varieties to add more texture.

Provided by Victoria Granof

Categories     Mustard     Potato     Side     Christmas     Vegetarian     Low Sodium     Horseradish     Root Vegetable     Winter     Christmas Eve     Bon Appétit     Sugar Conscious     Pescatarian     Wheat/Gluten-Free     Peanut Free     Tree Nut Free     Soy Free     No Sugar Added     Kosher

Yield Makes 6-–8 servings

Number Of Ingredients 7

2 1/2 pounds mixed russet, Yukon Gold, and white-skinned potatoes, peeled, cut into 2" cubes
1 1-pound celery root (celeriac), peeled, cut into 3/4" cubes
1 6" piece of horseradish, peeled, coarsely grated
1 1/2 cups sour cream
3 tablespoons Dijon mustard
2 tablespoons (1/4 stick) unsalted butter
Kosher salt

Steps:

  • Place potatoes, celery root, and horseradish in a large pot. Add water to cover by 1". Bring to a boil, reduce heat to medium-high, and simmer until vegetables are tender, 25-30 minutes.
  • Drain, reserving 1 cup cooking liquid. Return vegetables to pot; add sour cream, Dijon mustard, and butter. Using a potato masher, coarsely mash vegetables. Add reserved cooking liquid by tablespoonfuls if mash is too stiff. Season to taste with salt.

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