• Preheat the Oven or Air Fryer:

  Preheat your oven to 425°F (220°C) or set your air fryer to 400°F (200°C). Line a baking sheet with parchment paper for easy cleanup.
  
• Prepare the Potatoes:

  Wash and peel the potatoes if desired, then cut them into thin fries (about ¼-inch thick). For an even crispier texture, soak the cut fries in cold water for 30 minutes, then dry thoroughly.
  

Bake or Air Fry:

• Oven Method: Spread the fries in a single layer on the prepared baking sheet. Bake for 25–30 minutes, flipping halfway through, until golden and crispy.
  
• Air Fryer Method: Arrange fries in a single layer in the air fryer basket. Cook for 20–25 minutes, shaking the basket halfway through.
  
• Add the Finishing Touches:

  Transfer the cooked fries to a clean mixing bowl. Drizzle with truffle oil, sprinkle with Parmesan cheese, and toss gently to coat.
  
• Garnish and Serve:

  Sprinkle with chopped fresh parsley for an extra pop of color and freshness. Serve immediately with your favorite dipping sauce, such as garlic aioli or ketchup.