Ingredients

  • 3 pounds sweet potatoes
  • 1/4 cup olive oil
  • 2 teaspoons paprika, sweet, hot or a combination
  • 1 tablespoon coarse or kosher salt
  • 1 teaspoon cumin seeds, toasted
  • 1 teaspoon coriander seeds, toasted
  • 1 tablespoon dark brown sugar

Method

  • Heat the oven to 425 degrees.
  • Cut the skins off the sweet potatoes, squaring off the round sides to make each potato into a large rectangle.
  • Cut into long fries about 1/4-inch thick and 1 inch wide.
  • (If not using potatoes immediately, soak in water for up to 1 day.
  • Drain and pat dry before cooking.)
  • Put two large sheet pans in the oven to heat.
  • Toss the potatoes, and skins if you like, with oil, paprika and 2 teaspoons of the salt.
  • Arrange in one layer on the hot pans.
  • (Dont use parchment paper; it will make the potatoes soggy.)
  • Roast until tender and starting to brown on the bottom, about 15 minutes.
  • Meanwhile, grind the cumin, coriander and 1 teaspoon salt together.
  • Mix in the brown sugar.
  • Remove pans from the oven and raise the heat to 450 degrees, or set to broil.
  • With a spatula, carefully loosen the fries and turn each one over.
  • Sprinkle with the spice and sugar mixture.
  • Return to the oven and bake just until the fries are blistered and sizzling vigorously, about another 5 minutes.
  • (If your oven has a convection feature, use it.)
  • Do not overcook, or the fries will become leathery.
  • Cool slightly.