Shoestring Fries
Shoestring fries are potatoes cut into very thin strips, roughly 1/8 inch (3mm) square in cross-section, then deep-fried until crisp. The thin cut means a high ratio of crispy surface to soft interior, so they cook fast and stay crunchy longer than thicker-cut fries. They're the standard fry at diners and fast food chains and the cut most often bagged as 'shoestring' or 'julienne' fries in the freezer aisle.
Varieties
Shoestring, julienne, and matchstick fries are essentially the same idea at slightly different widths: shoestring is the thinnest (about 1/8 inch), julienne runs a bit thicker (up to 1/4 inch), and matchstick sits in between. Waffle fries and curly fries are cut on different equipment entirely and behave differently in the fryer since their shape traps more oil in pockets.
Buying tips
For homemade, choose russet or Idaho potatoes for their high starch and low moisture, which fry up crisper than waxy varieties like red or Yukon Gold. When buying frozen, check the ingredient list; bags labeled 'shoestring' or 'julienne' should list only potatoes, oil, and salt if you want to avoid excess starch coatings that soften on reheating.
Substitutes
Matchstick-cut sweet potato fries — 1:1 by volume
Same thin cut but sweet potatoes brown faster and stay slightly softer inside due to lower starch; fry a minute or two less.
Frozen shoestring fries — 1:1 by weight
Already blanched and often coated for crispness; skip the soaking step and fry straight from frozen at a slightly lower oil temperature to avoid scorching before the inside heats through.
Hand-cut julienne fries (slightly thicker, about 1/4 inch) — 1:1 by weight
A reasonable stand-in when you don't have a mandoline; add 1-2 minutes of fry time since the strands are thicker.
Waffle-cut fries — not a direct substitute
Different shape entirely, but a workable swap for texture and crunch in a burger-topping or loaded-fries context where exact cut doesn't matter.
Shredded hash browns, pressed and fried into a mat — not a direct substitute
Useful only when the goal is a crispy potato topping rather than individual fry strands, such as on a loaded plate.
Storage
Raw cut potatoes hold in a bowl of cold water in the refrigerator for up to 24 hours before frying; this also rinses off surface starch and helps crispness. Cooked shoestring fries lose their crunch within 10-15 minutes at room temperature; reheat in a 425°F (220°C) oven or air fryer for 3-4 minutes rather than a microwave, which turns them soft.
How to use
Fried once at around 325°F (165°C) until pale and just cooked through, then a second time at 375°F (190°C) for a minute or two until deep golden, which is the double-fry method that keeps them crisp longer. Serve immediately, salted right out of the oil. They're also used as a crunchy topping on burgers, loaded with cheese and gravy for poutine-style plates, or piled onto hot dogs.
What it pairs with
Classic with ketchup, mayonnaise, or a vinegar-based dipping sauce. Works well under melted cheddar and bacon for loaded fries, or alongside grilled burgers and hot dogs where a thicker fry would feel heavy.
Nutrition
Because the thin cut has more surface area exposed to oil relative to its volume than a steak fry or wedge, shoestring fries absorb noticeably more oil per ounce of potato, making them higher in fat than thicker-cut fries even at the same serving weight.
FAQ
Why do shoestring fries go limp faster than steak fries?
Their thin cut means less starchy interior mass to hold heat and structure, so moisture escapes and they cool and soften within minutes of leaving the fryer.
Do shoestring fries need to be soaked before frying?
Yes if cut fresh. Soaking in cold water for at least 30 minutes removes surface starch that would otherwise cause the fries to stick together and brown unevenly.
What's the best oil temperature for shoestring fries?
Fry at 325°F (165°C) for the first pass to cook through without over-browning, then a quick second fry at 375°F (190°C) for color and crunch; because they're thin, the second fry only needs 60-90 seconds.
Can shoestring fries be made in an air fryer?
Yes, tossed in a thin coat of oil and cooked at 400°F (200°C) for 8-10 minutes, shaking the basket halfway through; they won't be quite as crisp as deep-fried but hold their shape well since they're so thin.
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