🍟 Japanese Long Fries with Garlic Parmesan Mayo Dip
Extra-long, crispy, golden potato fries coated in aromatic spices and served with a creamy garlic Parmesan mayo dip. These fun Japanese-inspired long fries are crunchy on the outside, fluffy inside, and seriously addictive.
⏱ Recipe Information
Prep Time: 25 minutes
Chill Time: 30 minutes
Frying Time: 10–15 minutes
Total Time: About 1 hour 10 minutes
Servings: 4–6
Difficulty: Medium
Ingredients
🍟 For the Fries
- 6 large potatoes, peeled
- 85 g cornflour (cornstarch)
- 1½ teaspoons garlic powder
- 1 teaspoon chili flakes
- 1 teaspoon dried oregano
- ½ teaspoon chili powder
- ½ teaspoon black pepper
- 1 teaspoon dried parsley
- Salt, to taste
- Oil, for greasing hands and deep frying
For Tossing After Frying
- 1 teaspoon garlic powder
- ½ teaspoon chili flakes
- ½ teaspoon dried parsley
- ¼ teaspoon black pepper
- ½ teaspoon salt, or to taste
- 2 tablespoons grated Parmesan cheese
🧄 Garlic Parmesan Mayo Dip
- ½ cup (120 g) mayonnaise
- 1 small garlic clove, finely grated or minced
- 2 tablespoons finely grated Parmesan
- 1 teaspoon lemon juice
- ½ teaspoon dried parsley
- Pinch of black pepper
- Pinch of salt, if needed
Instructions
1. Prepare the Potatoes
Peel the potatoes and cut them into chunks.
Place them in a large pot of cold water.
Bring to a boil and cook for approximately 8–10 minutes, until the potatoes are tender enough to mash but not falling apart.
Drain thoroughly.
Allow them to cool until easy to handle.
2. Make the Potato Mixture
Transfer the cooked potatoes to a large bowl.
Mash until very smooth.
Avoid leaving large lumps because they can make the fries difficult to shape.
Add:
- Cornflour
- Garlic powder
- Chili flakes
- Oregano
- Chili powder
- Black pepper
- Dried parsley
- Salt
Mix thoroughly until you have a soft, cohesive potato dough.
If the mixture feels too sticky, add a small amount of extra cornflour.
3. Shape the Long Fries
Lightly coat your hands with oil.
Take a portion of the potato mixture and roll it into a long, thin rope.
Aim for approximately ½ inch (1–1.5 cm) thick.
Cut into long pieces, around 6–8 inches (15–20 cm) long.
Place the shaped fries on a parchment-lined tray.
Repeat with the remaining mixture.
Tip:
Keep your hands lightly oiled rather than adding lots of flour. This helps maintain the smooth texture.
4. Chill the Fries
Place the tray in the refrigerator for approximately 30 minutes.
This helps the potato mixture firm up and makes the fries less likely to break apart during frying.
5. Heat the Oil
Pour enough vegetable oil into a deep, heavy saucepan or deep fryer to completely submerge the fries.
Heat the oil to approximately 350°F (175°C).
Safety:
Don’t fill the pot more than halfway with oil, and keep the handle turned away from the edge of the stove.
6. Fry the Long Fries
Carefully lower a few fries into the hot oil.
Don’t overcrowd the pan.
Fry for approximately 3–5 minutes, turning occasionally, until deeply golden and crisp.
Remove with a slotted spoon or spider strainer.
Transfer to a paper towel-lined plate or wire rack.
Repeat with the remaining fries.
🌶️ 7. Season While Hot
Combine the post-frying seasoning:
- Garlic powder
- Chili flakes
- Dried parsley
- Black pepper
- Salt
- Parmesan
While the fries are still hot, toss them gently with the seasoning mixture.
The warmth helps the Parmesan and spices cling to the crispy surface.
🧄 Make the Garlic Parmesan Mayo Dip
8. Mix the Dip
In a small bowl, combine:
- Mayonnaise
- Garlic
- Parmesan
- Lemon juice
- Dried parsley
- Black pepper
Mix until smooth and creamy.
Taste and add a little salt if necessary.
For a stronger garlic flavor, let the dip rest in the refrigerator for 15–20 minutes before serving.
🍟 Serve
Arrange the crispy long fries on a serving platter.
Serve immediately with the garlic Parmesan mayo dip on the side.
For an extra finish, sprinkle with:
- Fresh Parmesan
- Chopped parsley
- Chili flakes
- A little black pepper
⭐ Chef’s Tips
Mash the Potatoes Very Smoothly
Lumps can cause the fries to crack or break during shaping and frying.
Don’t Skip the Cornflour
Cornflour helps create the characteristic crisp exterior and gives the potato mixture enough structure to hold its long shape.
Chill Before Frying
Cold fries are much easier to handle and are less likely to fall apart in the oil.
Fry in Small Batches
Too many fries at once can dramatically lower the oil temperature and result in greasy fries.
Season Immediately
Add the seasoning while the fries are hot so it sticks properly.
Keep Them Long
The fun of this recipe is the oversized shape, but don’t make the fries so thin that they become fragile.
🌶️ Variations
Extra Spicy
Add cayenne pepper or extra chili flakes to the potato mixture.
Cheesy Fries
Toss the finished fries with extra Parmesan and shredded mozzarella.
Truffle Parmesan
Add a few drops of truffle oil to the finished fries and toss with Parmesan.
Herb & Garlic
Skip the chili and increase the garlic powder, parsley, and oregano.
Spicy Garlic Mayo
Add 1 teaspoon sriracha to the dipping sauce.
Storage & Reheating
These fries are best served immediately.
If you have leftovers, refrigerate them in an airtight container for up to 2 days.
Reheat in an air fryer at 375°F (190°C) for 4–6 minutes or in a hot oven until crisp.
Avoid microwaving if possible, as it will soften the crust.
🍟 Recipe Summary
These Japanese Long Fries turn simple potatoes into something seriously fun: long, crispy, golden potato sticks loaded with garlic, herbs, chili, and Parmesan, paired with a creamy homemade garlic Parmesan mayo.
Crispy, savory, spicy, cheesy, and perfect for sharing—especially with someone who loves fries!