Worked out from this recipe's ingredients. If you're cooking for an allergy, always read the full ingredient list.
Shaggy-edged, deeply crisp fries done two ways: the classic two-stage fry that trattoria kitchens use to get a glassy shell and a fluffy interior, plus a cornstarch-tossed air fryer or oven shortcut that gets shockingly close with a few tablespoons of olive oil. Both finish the same way — hot fries showered with fine salt, chopped rosemary, garlic and a snowfall of Parmesan.
Ingredients
Potatoes
2 lb russet potatoes (about 3 large)
1 tbsp distilled white vinegar (for the soaking water)
1 tbsp kosher salt (for the soaking water)
Method 1 — Double Fry
6 cups peanut or vegetable oil, for frying
Method 2 — Air Fryer or Oven Shortcut
2 tbsp cornstarch
3 tbsp olive oil
Rosemary-Parmesan Finish
1 1/2 tsp fine sea salt, plus more to taste
1 tbsp fresh rosemary leaves, finely chopped
1 clove garlic, grated on a microplane
1/2 cup finely grated Parmesan
1/4 tsp freshly ground black pepper
Lemon wedges, for serving (optional)
Instructions
Peel the potatoes (or leave a little skin on if you like a rustic edge) and square off the sides. Cut into planks 3/8 inch thick, then cut the planks into 3/8-inch batons. Consistent thickness matters more than perfect looks — thin strays burn while thick ones stay raw.
Put the cut fries in a large bowl, cover with cold water by 2 inches, and stir in the vinegar and kosher salt. Soak 30 minutes (up to 4 hours in the fridge). This pulls out surface starch and the vinegar firms the pectin so the fries hold their shape.
Drain the fries and spread them on a clean kitchen towel. Blot the tops with a second towel until they look matte and dry — surface water is the enemy of both crisping and safe frying. Now pick your method.
METHOD 1, FIRST FRY: Pour oil into a heavy 5- to 6-quart Dutch oven to a depth of 2 1/2 inches (never more than halfway up the pot). Heat over medium to 325°F on a clip-on thermometer. Fry the potatoes in 3 batches, 4 to 5 minutes per batch, stirring gently once or twice: they should be limp, pale and cooked through with no color. Lift out with a spider or slotted spoon onto a rack-lined sheet pan.
METHOD 1, REST: Let the blanched fries cool at least 15 minutes, until no longer steaming (they can sit at room temperature up to 2 hours, or be refrigerated overnight uncovered). This rest is what creates the crisp shell later — skipping it gives you limp fries.
METHOD 1, SECOND FRY: Raise the oil to 375°F. Fry again in 3 batches, 2 to 3 minutes each, until deep golden and audibly crackly. Drain on the rack for 10 seconds only, then move straight to the finishing bowl in Step 9. Let the oil return to 375°F between batches.
METHOD 2, AIR FRYER: Toss the dried fries with the cornstarch in a large bowl until every stick wears a thin white dust, then add the olive oil and toss again until glossy and no dry patches remain. Air fry at 380°F for 12 minutes, shaking the basket twice, then raise to 400°F and cook 6 to 8 minutes more until browned and rigid. Work in two batches if your basket is crowded — fries need room.
METHOD 2, OVEN: Place a heavy rimmed sheet pan in the oven and preheat to 425°F. Toss the dried fries with cornstarch, then olive oil, as above. Carefully spread them in a single layer on the hot pan, not touching. Bake 20 minutes, flip with a thin metal spatula, then bake 12 to 15 minutes more until golden and crisp at the edges.
FINISH: Combine the fine sea salt, rosemary, grated garlic and black pepper in a large bowl. Dump the hot fries in, add the Parmesan, and toss immediately with your hands or two spoons for about 15 seconds — the residual heat blooms the garlic and rosemary and melts the cheese into a thin coating. Taste, add salt, and serve at once with lemon wedges.
Chef's tips
Russets only. Waxy red or yellow potatoes have too much moisture and not enough starch; they turn leathery instead of fluffy.
If you're frying, do the first fry in the morning and the second right before dinner. Blanched fries hold beautifully and the second fry takes 3 minutes.
Keep the oil temperature honest with a thermometer. Below 320°F the fries drink oil; above 385°F they brown before the inside cooks.
For the shortcut method, use finely grated Parmesan (the sandy kind, not shreds) so it clings instead of sliding off in clumps.
Strain cooled frying oil through a coffee filter or fine sieve into a jar; it's good for two or three more batches of potatoes.
Salt fries the second they come out of the oil or basket — once the surface cools, nothing sticks.
Nutrition (per serving, estimated)
520calories
10gprotein
58gcarbs
29gfat
Estimates only — values vary with brands and portions.
Made with Sprig
Double-Fried Rosemary-Parmesan Fries was created in Sprig — the AI chef that turns any craving into a complete recipe, plans your week, and shops with one smart list.