Celeriac & Potato Mash Recipe

Yields: 4-6 servings
Prep Time: 15 minutes
Cook Time: 30 minutes


  • 1 medium celeriac (about 1 pound), peeled and cut into 1-inch chunks
  • 1 pound russet or Yukon gold potatoes, peeled and cut into 1-inch chunks
  • 1 large garlic clove, peeled and smashed (optional)
  • 1/2 cup (1 stick) unsalted butter
  • 1/4 cup milk (more or less to desired consistency)
  • 2 tablespoons heavy cream or sour cream (optional, for extra richness)
  • 1 teaspoon Dijon mustard (optional)
  • Salt and freshly ground black pepper to taste
  • Fresh herbs for garnish (optional, such as chives or parsley)


  • Prep the vegetables: Peel the potatoes and celeriac. Cut them into roughly equal-sized chunks for even cooking.
  • Cook the vegetables: Place the potatoes, celeriac, and the optional garlic clove in a large pot. Cover with cold water, add a generous pinch of salt, and bring to a boil over high heat. Reduce heat to maintain a simmer and cook until the vegetables are very tender, about 20-25 minutes.
  • Drain and steam dry: Drain the vegetables well in a colander. Return the drained vegetables to the pot and let them sit uncovered over low heat for a few minutes to release excess moisture.
  • Mash: Add half the butter to the pot. Mash the vegetables with a potato masher or pass them through a ricer for a smoother texture.
  • Enrich and season: Gradually stir in the remaining butter, milk, and the optional cream or sour cream until the mash reaches your desired consistency. Stir in the Dijon mustard, if using. Season generously with salt and pepper.
  • Serve and garnish: Taste and adjust seasonings. Transfer the mash to a serving bowl. Garnish with chopped herbs, if desired, and serve immediately.


  • Milk matters: For creamier mash, warm the milk and cream before adding.
  • Garlic boost: For a more pronounced garlic flavor, mince the clove.
  • Herb variations: Use your favorite herbs; thyme, rosemary, and tarragon pair well.
  • Make-ahead: This can be made in advance and reheated gently before serving. Add a splash of milk or cream if needed to loosen the texture.


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