Crispy Japanese-Style Long Fries (From Mashed Potatoes!)

Ever wish fries were crispier, stretchier, and honestly just… more fun? These crispy Japanese-style long fries are exactly that. Made from mashed potatoes and a few simple ingredients, they’re golden and crunchy on the outside, soft and chewy on the inside — and wildly addictive.

They’re inspired by a popular Japanese street snack that’s all over TikTok and food reels. You’ve probably seen them: extra-long fries in cones, drizzled with mayo and topped with cheese or chili flakes. Here’s how you can recreate that vibe right in your kitchen — no deep fryer needed.

Why You’ll Love These Fries

  • Crispy on the outside, soft and chewy inside
  • Made with simple pantry ingredients
  • Perfect for dipping
  • Fun to share, snack, or serve on the side

How to Make this Crispy Japanese-Style Long Fries

Full measurements and times are in the recipe card below

Boiled potatoes drained and dried in a pot before mashing
Boil the potatoes
Add cubed potatoes to salted water and boil until fork tender.
Drain well and return to the pot over low heat for a minute to remove extra moisture.
Silky mashed potatoes prepared with a ricer in a mixing bowl
Mash until smooth
Use a potato ricer if you have one for the smoothest texture. A masher works too, just make sure there are no lumps.
Mixing mashed potatoes with starch and spices to form a smooth dough
Mix the dough
In a bowl, combine the mashed potatoes with starch, salt, paprika, chili flakes, and garlic powder if using.
Mix until it forms a soft, dough-like texture.
Potato dough flattened inside a ziplock bag and chilled before slicing
Flatten and chill
Transfer the dough into a ziplock bag or sandwich it between parchment. Flatten evenly to about one half inch thick.
Freeze flat for thirty to forty five minutes until firm but
not frozen solid.
Strips of chilled mashed potato dough cut into long rectangular fries
Cut into fries
Slice into long strips about one half inch wide. If they break while lifting, make them shorter. They will still taste great.
Golden brown fries frying in oil in a deep pan until crispy
Fry until crispy
Heat oil in a wide pot. Fry the strips in small batches until golden and crisp, flipping halfway. Let them drain on a wire
rack or paper towel.
Crispy Japanese-style long fries served with vegan mayo, parsley, and dipping sauce
Garnish and serve
Top with vegan mayo or spicy mayo, chopped parsley, and vegan parmesan if you like. Serve hot with your favorite dip.

Tips for the Best Fries

  • Use starchy potatoes like russets
  • Mash until completely smooth
  • Chill the dough so it’s easy to cut and handle
  • Fry in batches to avoid dropping the oil temperature
  • Serve right away for maximum crispiness

Final Thoughts about this Crispy Japanese-Style Long Fries

Crispy Japanese-Style Long Fries are a fun and flavorful twist on a classic favorite. With their golden crunch, savory umami notes, and simple ingredients, they’re the perfect plant-based snack or side dish for any occasion. Whether you’re entertaining guests or craving a quick treat, these fries deliver the ideal balance of texture and taste—crisp on the outside, soft on the inside, and utterly satisfying.

Craving More Crispy Snacks

If these Japanese-style fries were your thing, you will love my crispy potato balls. They use the exact same ingredients and a very similar method, but you shape them into little golden bites instead of long strips. No freezing needed either. Just roll and fry. Cozy, easy, and perfect for dipping.

And if you’re new here or just looking for plant-based ideas, head over to the Dr Vegan homepage to explore the latest recipes. I share everything from weeknight staples to fun snacks like this.

Thanks for cooking with me. See you in the next recipe 😊

Crispy Japanese-style long fries served with vegan mayo, parsley, and dipping sauce
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Crispy Japanese-Style Long Fries

Crispy on the outside, soft and chewy inside — these Japanese-inspired long fries are made from mashed potatoes and pantry staples. A viral street snack turned easy homemade recipe that's perfect for dipping, sharing, or snacking solo. Vegan-friendly and totally addictive.
Servings 16 fries
Prep Time 15 minutes
Cook Time 20 minutes
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Ingredients
 

For the Potato Dough

  • 1 pound (450 g) russet potatoes, peeled and cubed
  • 4 to 5 tbsp cornstarch or potato starch
  • 1/2 tsp salt
  • 1/4 tsp chili flakes
  • 1/2 tsp half teaspoon paprika
  • pinch garlic powder, optional

For Frying

  • 2 cups (500 ml) neutral oil such as canola or sunflower

To Serve

  • Vegan mayo or spicy mayo
  • Chopped fresh parsley
  • Vegan parmesan, optional

Equipment

  • Medium pot
  • Potato masher or ricer
  • Rolling Pin
  • Ziplock bag or parchment

Instructions
 

Boil the potatoes

  1. Place cubed potatoes in salted water and boil until fork tender, about fifteen to twenty minutes. Drain well, then return to the pot over low heat for one to two minutes to remove excess moisture.

Mash until smooth

  1. Use a potato ricer for a silky mash or mash well by hand until completely smooth. No lumps should remain.

Mix the dough

  1. Transfer the mash to a bowl. Add cornstarch, salt, chili flakes, paprika, and garlic powder if using. Mix into a soft, pliable dough. Add more starch if it feels too soft or a teaspoon of water if it feels dry.

Flatten and chill

  1. Transfer the dough to a ziplock bag or sandwich between parchment sheets. Flatten to one half inch thick using your hands or a rolling pin. Freeze flat for thirty to forty five minutes until firm but not solid.

Cut into strips

  1. Remove the dough and cut into long rectangular strips about one half inch wide. If the fries break while lifting, make them shorter.

Fry until golden

  1. Heat oil in a wide pot to three hundred seventy five degrees Fahrenheit. Carefully lower in a few fries at a time. Fry for three to five minutes, flipping halfway, until golden brown and crispy. Drain on a wire rack or paper towels.

Garnish and serve

  1. Drizzle with vegan mayo, sprinkle with chopped parsley and vegan parmesan, and serve warm with your favorite dip.

Nutrition

Calories: 23kcalCarbohydrates: 5gProtein: 1gFat: 0.03gSaturated Fat: 0.01gPolyunsaturated Fat: 0.02gMonounsaturated Fat: 0.003gCholesterol: 0.2mgSodium: 13mgPotassium: 121mgFiber: 0.4gSugar: 0.2gVitamin A: 10IUVitamin C: 2mgCalcium: 4mgIron: 0.3mg

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