Ingredients:

  • 4 Large Russet or Idaho Potatoes (Approx. 1.2 kg total)
  • 2 Tbsp Neutral oil (e.g., Rapeseed, Grapeseed, or Avocado oil)
  • 1 tsp Coarse Sea Salt (e.g., Maldon)
  • 4 Tbsp Unsalted Butter (optional, at room temperature, for serving)
  • Flaky sea salt (for serving, to taste)
  • Freshly ground black pepper (for serving, to taste)

Instructions:

  1. I. Prep & Preheating: Preheat the Oven: Set your oven to 425°F (220°C). Prepare the Rack: Place a wire rack over a sturdy baking sheet to ensure full airflow.
  2. Clean the Potatoes: Scrub the potatoes vigorously under cold running water using a brush. Pat them completely dry with a clean tea towel. Moisture is the enemy of crispy skin.
  3. II. The Critical Prep: Prick the Skins: Using a fork or a thin metal skewer, pierce the potatoes deeply 8-10 times all over. This allows steam to escape during cooking, ensuring a fluffy texture.
  4. Oil and Salt: Rub the potatoes generously with the neutral oil. Then, sprinkle them liberally with the coarse sea salt. The fat and salt are key components for creating that wonderful crackle.
  5. Load the Oven: Place the prepared potatoes directly onto the wire rack, ensuring they are not touching each other.
  6. III. Baking & Doneness: Initial Bake: Bake for 60 minutes undisturbed.
  7. Turn and Continue: Using tongs, flip the potatoes over and bake for another 15 to 30 minutes, depending on size. The skin should be deeply browned and crunchy.
  8. Test for Doneness (The Squeeze Test): A perfectly cooked potato should feel soft and slightly hollow when gently squeezed (use an oven mitt). The internal temperature should be 210°F (99°C).
  9. IV. Finishing & Serving: Vent and Fluff: Remove the potatoes from the oven. Immediately slice them lengthwise down the middle (do not cut all the way through) and pinch the ends to open them up.
  10. Fluff the Flesh: Use a fork to quickly pierce and fluff the exposed, steaming potato flesh, incorporating air for a light texture.
  11. Season and Serve: Add a generous pat of butter (if using), season immediately with flaky sea salt and pepper, and load up with your chosen toppings.