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Starch Technique: Roasting Potatoes for Shatteringly Crisp Edges

Unlock the secret to perfectly roasted potatoes with the starch technique. This method capitalizes on the natural starch found in potatoes to create an irresistibly crispy exterior. Begin by selecting the right potato variety—starchy types like Russet are ideal for their high starch content and fluffy interior. The key is to maximize surface area by cutting potatoes into uniform pieces, ensuring even cooking. Next, the potatoes are parboiled to partially cook them, setting the stage for crispiness. After draining, the critical step involves tossing the potatoes with their own starchy cooking water, which acts as a natural binder when roasted. This starch layer crisps up beautifully in the oven, creating that sought-after shatter-like texture. Understanding the science behind this technique reveals how starch gelatinizes and caramelizes at high temperatures, forming a golden, crunchy crust. The oven's heat must be high enough to drive off moisture quickly, yet not so high that the exterior burns before the interior is cooked through. This method ensures that each bite offers a delightful contrast between the crisp exterior and the fluffy, well-cooked interior. Whether served as a side dish or a standalone treat, mastering this technique will elevate your roasted potatoes to chef-level perfection. Remember to preheat your oven and use a baking sheet with ample space to prevent overcrowding, which can lead to steaming instead of roasting. Lastly, resist the urge to toss the potatoes while they cook, allowing them to develop their crisp edges undisturbed.

Notes

The starch technique works by leveraging the natural starches released during parboiling, which become a crispy coating when roasted. Troubleshooting common mistakes includes ensuring potatoes are fully drained to avoid steaming and not overcrowding the baking sheet. Safety-wise, use oven mitts when handling hot pans and sheets. For make-ahead options, roast the potatoes and reheat them in a 350°F oven for 10 minutes to maintain crispness. Store any leftovers in an airtight container for up to 3 days.

Steps

  1. 1 Preheat oven to 450°F.
  2. 2 Cut 2 pounds of Russet potatoes into 1-inch cubes for uniform cooking.
  3. 3 Place potatoes in a large pot and cover with cold water by 2 inches.
  4. 4 Bring to a boil and cook for 8 minutes, then drain thoroughly.
  5. 5 Return potatoes to the hot, dry pot and shake over medium heat for 1-2 minutes to rough up edges.
  6. 6 Toss potatoes with 2 tablespoons of oil and a generous pinch of salt.
  7. 7 Spread potatoes in a single layer on a parchment-lined baking sheet.
  8. 8 Roast for 30-35 minutes, flipping halfway through for even browning.
  9. 9 Check for doneness by ensuring edges are golden and crisp, and interior is tender.

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