Potato and Celery Root Mash

A creamy and flavorful side dish combining potatoes, celery root, and horseradish, enriched with sour cream and Dijon mustard for a sophisticated twist on classic mashed potatoes.

6 servings
40 min

Ingredients

  • pounds mixed potatoes
  • 1 pound celery root
  • 1 piece horseradish
  • cups sour cream
  • 3 tablespoons Dijon mustard
  • 2 tablespoons unsalted butter
  • to taste Kosher salt

Cooking Instructions

  1. 1.

    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.

    30 min

  2. 2.

    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.

    10 min

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