
Crispy roast potatoes are one of those side dishes that can genuinely steal the show, and this version delivers the kind of shatteringly crunchy exterior with a fluffy, steamy center that makes everyone reach for seconds. The secret is a two-step process — par-boiling the chunks until the edges go ragged, then shaking them dry in the pot to rough up the surface before they hit a screaming-hot pan of fat. That textured, shaggy coating is exactly what crisps up so dramatically in the oven. Duck fat, goose fat, or beef tallow each bring a deep, savory richness that olive oil can't quite match, though olive oil works beautifully if that's what you have on hand. Optional crushed garlic and fresh rosemary or thyme nestle in alongside the potatoes and perfume the whole tray as everything roasts. Because the ingredient list is so straightforward — just potatoes, fat, salt, pepper, and a few aromatics — there's nothing hidden to worry about, making this an effortless fit for anyone avoiding sweeteners in their food. Serve them straight from the pan while the crust is still crackling and don't be surprised when the bowl empties fast.
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Preheat the oven to 425°F (220°C). Place the fat in a large rimmed baking sheet and set it in the oven while it preheats.
Place the potato chunks in a large pot, cover with cold water by at least 1 inch, and add the kosher salt. Bring to a boil over high heat, then reduce to a vigorous simmer and cook for 10–12 minutes, until the edges are just beginning to look ragged and a knife tip meets slight resistance at the center — the potatoes should not be fully cooked through.
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