Air Fryer Yam Fries (Dundun)
Nigerian dundun made lighter — true puna yam cut into batons and air-fried until golden outside and fluffy inside. Not sweet potato, and that's the point.
By Air Fryer Cookbook Team · Aug 14, 2026

Photo: Wikimedia Commons — “Fried Yam Slices” by Flixtey (CC BY-SA 4.0)
First, the thing that matters: this is not sweet potato. The orange tuber American supermarkets label "yam" is a different plant from a different continent. True yam — puna yam, white yam, Dioscorea — is a massive, bark-skinned staple that feeds hundreds of millions of people across West Africa, and Nigeria grows more of it than the rest of the world combined. It cooks up nothing like sweet potato either: drier, starchier, savory rather than sugary, closer to a russet potato with more spine.
Dundun is the street version — thick batons of that yam, fried golden, handed over hot with ata dindin, a rough fried-pepper sauce, or stacked next to fried plantain and eggs. It's roadside food, market food, food you eat standing up. Nothing about it is complicated, which is exactly why the quality of the yam and the crisp of the fry carry everything.
The honest trade: a deep fryer gives dundun an even, all-around golden crust that moving air can't perfectly match, especially on a starch this dense. Our fix is a short parboil — five minutes, no more — which jump-starts the interior so the air fryer can spend its twenty minutes on color instead of raw starch. What comes out is golden, blistered at the edges, fluffy in the middle, and made with a tablespoon and a half of oil instead of a pot. We put the batch next to a bowl of pepper sauce and it went the way street food should.
Finding puna yam means a trip to an African or Caribbean grocer, where it'll be sold whole or in cut, plastic-wrapped sections. Pick a piece that's firm and creamy-white inside. That trip is the recipe; the air fryer just finishes the job.
Air Fryer Yam Fries (Dundun)
35m · Serves 4 · Easy · Cosori 5.8QT
Ingredients
- 1½ lbpuna yam — true white yam from an African or Caribbean grocer — not sweet potato
- 1½ tbspneutral oil
- ¾ tspfine sea salt
- ½ tspcayenne pepper — optional, or serve with pepper sauce instead
Method
- 01
Peel the yam with a sturdy knife or peeler — the skin is thick and bark-like — and cut it into batons about a half-inch square and three inches long. Rinse them well in cold water to wash off the starchy, slippery surface, then drop them into a bowl of salted water while you work; peeled yam browns quickly in air.
- 02
Parboil the batons in the salted water for 5 minutes — just to take the raw edge off, not to soften them through. Drain and let them steam-dry completely. Dry surfaces are what crisp.
- 03
Toss the batons with the oil, salt, and cayenne if using. Arrange in a single layer in the air fryer basket, working in two batches if needed — crowded yam steams instead of browning.
- 04
Air fry at 380°F for 20 minutes, turning the fries at the halfway mark, until the outsides are golden and lightly blistered and a knife slides into the centers with no resistance.
- 05
Taste one and add salt while hot. Serve immediately, ideally with a spicy Nigerian pepper sauce or a fried-tomato stew for dragging them through.
Nutrition · per serving
210 cal / 2g protein / 5g fat / 40g carbs
Estimated. Values vary by brand and portion.
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Common questions
- How long do you cook yam fries in an air fryer and at what temperature?
- Air fry at 380°F for 20 minutes, turning at the halfway mark, until the outsides are golden and lightly blistered and a knife slides into the centers with no resistance.
- Do you have to parboil yam before air frying?
- Yes, briefly. Parboil the batons in salted water for just 5 minutes to jump-start the interior, then drain and steam-dry completely. That lets the air fryer spend its 20 minutes on color instead of raw starch.
- Is yam the same as sweet potato for these fries?
- No. This uses true puna yam (Dioscorea) from an African or Caribbean grocer, not the orange American sweet potato. Real yam is drier, starchier, and savory, closer to a russet potato with more spine.
- Why are my air fryer yam fries not crisping?
- Crowded yam steams instead of browning. Rinse off the slippery surface starch, steam-dry the parboiled batons completely, and arrange them in a single layer, working in two batches if needed. Dry surfaces are what crisp.
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