Crispy Mashed Potato Fries Recipe

Quick Overview

These mashed potato fries combine smooth boiled potatoes with a crushed garlic, cilantro, jalapeño, and peanut blend. Mashing everything together inside a ziplock bag creates a smooth dough, which is flattened, chilled, cut into clean sticks, and fried until deeply golden.

The technique gives you crisp edges on the outside and a fluffy, savory interior. Squeezing in fresh lime juice adds a bright pop that balances the richness of the deep fry.

• Prep time: 20 minutes • Cook time: 10 minutes • Total time: 30 minutes (plus 30 minutes chilling time) • Servings: 4 servings • Estimated calories per serving: 280 kcal

Ingredients

For the Garlic Herb Mash

• 6 whole baby potatoes, boiled until fork tender • 6 whole garlic cloves • 1 green jalapeño pepper, sliced • 1/4 cup roasted peanuts • 1/4 cup fresh cilantro leaves • 1/2 fresh lime, juice squeezed

For the Potato Dough & Frying

• 3 tbsp cornstarch • 2 tbsp mayonnaise • 1/2 tsp ground black pepper • 1 tsp salt • 2 cups vegetable oil, for deep frying

How to Make Crispy Mashed Potato Fries

1. Place the whole garlic cloves, jalapeño slices, roasted peanuts, and fresh cilantro into a mortar and pestle.
2. Crush the ingredients firmly until a coarse herb and garlic paste forms.
3. Squeeze the juice of half a lime into the mortar and mix to combine.
4. Transfer the boiled potatoes, crushed herb paste, cornstarch, mayonnaise, black pepper, and salt into a zip-top plastic bag.
5. Seal the bag tightly and mash the contents thoroughly with your hands until smooth and fully blended.
6. Press the mashed potato mixture flat into an even layer inside the bag using a ruler or straight edge.
7. Place the bag in the refrigerator for 30 minutes until the potato dough sets firm.
8. Cut open the plastic bag, slice the dough into uniform rectangular sticks, and gently separate them.
9. Heat the vegetable oil in a deep skillet over medium-high heat until it reaches 350°F (175°C).
10. Slide the potato sticks into the hot oil and fry for 4 to 5 minutes, turning occasionally with tongs until deep golden and crispy.
11. Remove the fries from the oil, drain on paper towels, sprinkle with flaky sea salt, and drizzle with hot sauce.

Pro Tip

Ensure the potato dough is chilled completely solid before slicing and frying. If the mashed potato mixture is warm or room temperature, the starch structure remains too soft, causing the sticks to break apart or dissolve when placed into the hot oil.

Serving & Storage

Serve these fries piping hot right out of the skillet while the exterior maintains its crunch. Pair them with spicy ketchup, siracha mayo, or garlic aioli for dipping. They work as a side for burgers or as an afternoon snack.

Keep leftover cooked fries in an airtight container in the refrigerator for up to 3 days. Freezing unfried potato sticks on a parchment-lined tray before transferring to a freezer bag works well for long-term storage up to 1 month.

Reheat refrigerated or frozen fries in an air fryer at 380°F (190°C) for 4 to 6 minutes to restore their crispiness. Avoid microwave reheating because it turns the crust soggy.

FAQs

Can I bake these potato fries instead of frying them? Yes, bake them on a parchment-lined sheet at 400°F (200°C) for 20 minutes, flipping halfway through until crisp.

Why did my potato sticks break apart in the oil?

The oil was not hot enough or the dough was not chilled properly before frying.

Can I substitute the peanuts in the herb paste?

Yes, you can substitute toasted cashew nuts or omit them entirely for a nut-free version.