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Mashed Potatoes with Fries

Mashed potatoes on steroids
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Course Sides
Servings 4 people

Ingredients
  

  • 1 pound russet potatoes cut into 1-inch pieces
  • Kosher salt
  • 3 tablespoons unsalted butter, cut into chunks
  • 1/2 cup sour cream
  • 1/2 cup whole milk
Fries
  • 1 pound russet potatoes
  • 1-1 1/2 quarts canola oil
  • Kosher salt
  • 2 tablespoons chopped fresh chives or scallions
  • Flaky sea salt, such as Maldon (optional)

Instructions
 

For the mashed potatoes:

  • Place the potatoes and 2 tablespoons salt in a medium pot and add enough cold water to cover by 1 inch. Bring to a boil and cook until the potatoes are very tender, about 10 minutes. Drain, return to the pot, and turn the heat to low just to dry the potatoes.
  • Pass the potatoes through a ricer and return them to the pot. Add the butter, sour cream, milk, and a pinch of salt and stir over low heat just to combine. Adjust the seasoning to taste. Remove the pot from heat, cover, and set aside.

For the fries:

  • Using a chef's knife or a mandoline slicer, cut the potatoes lengthwise into 1/8- inch-thick slices. Pat the slices dry with paper towel. With a knife cut the potatoes on the bias into skinny sticks. Pat the potato sticks dry.
  • Line a baking sheet with paper towels. Heat 2 inches of oil in a deep heavy pot -over medium heat until it shimmers, check temperature on a deep fry thermometer (or use an electric fryer) -325 degrees. If you don't have a thermometer, test the oil by dipping the tip of a chopstick or the handle of a wooden spoon; if the oil bubbles around it, reduce the heat a bit. Working in batches to avoid crowding, fry the potatoes until golden brown, about 5 minutes per batch (return the oil to 325 degrees between batches). Using a slotted spoon transfer the fries to the prepared baking sheet to drain, and season with salt.
  • Warm the mashed potatoes over low heat, then spread them on a platter or plates and top with the fries. Top with the chives or scallions and season with flaky salt to taste. Serve immediately.