Ingredients

  • 2 to 4 tablespoons unsalted butter
  • 1 tablespoon vegetable oil
  • 1 small onion, chopped
  • Kosher salt and freshly ground pepper
  • 2 cups diced leftover rutabaga, carrots, potatoes and leek
  • 2 cups chopped leftover corned beef
  • 2 tablespoons chopped parsley
  • 1 to 1 1/2 cups leftover corned beef cooking liquid

Method

  • Heat 2 tablespoons butter with the vegetable oil in a large cast-iron skillet over medium-high heat until almost smoking.
  • Add the onion, season with salt and pepper and cook until translucent, about 4 minutes.
  • Add half of the vegetables and cook, stirring occasionally, until golden, about 5 minutes.
  • Add the corned beef and cook until slightly brown, about 2 minutes.
  • Meanwhile, mash the remaining vegetables in a bowl with the parsley and 3/4 cup cooking liquid.
  • Add to the skillet and stir to make a large pancake, adding up to 1/2 cup more cooking liquid, if needed.
  • Cook until the hash is dark on the bottom, about 2 minutes.
  • Flip and continue cooking, turning occasionally and adding more butter if needed, until the hash is crunchy on the outside but still moist in the middle, 5 to 7 minutes.
  • Add 1/4 cup cooking liquid 1 minute before serving.
  • Photograph by Antonis Achilleos