I've burned more than my share of frozen fries over the years, mostly because I kept trusting the package directions that assume every air fryer runs the same. They don't. I've tested 40 foods in every machine I've owned, and fries are the one staple that exposes a machine's hot spots and airflow flaws faster than anything else.
The Cosori TurboBlaze (6-quart) is the best air fryer I've used for frozen french fries because it gets them crispy in 12 minutes without a single pale, soggy batch, and the preheat function actually does what it says.
I bought mine for $119.99 (6-quart model), and I've since bought three more as gifts. One for me, one for my 87-year-old mom, one for my neighbor caring for her 101-year-old husband. I've cooked frozen fries in it at least twice a week for six months. Here's exactly what works, what doesn't, and which machine you should skip if you're a fry person.
Pros
- Preheat function that actually preheats. The TurboBlaze hits 400°F and tells you when it's ready. No guessing, no waiting for the light to blink.
- Ceramic-coated basket that releases even melted cheese with ease. Fries that get stuck to the grates come off with a quick soak.
- Quiet enough that I have to check if it's even on. My old air fryer was so loud I had to leave the room. This one hums.
- Holds about 9 taquitos, which means it holds a full bag of fries if you shake them at the halfway mark.
Cons
- Small fries slip through the grates. The skinny ones fall to the bottom of the basket, where they burn and smoke and make a mess. I've seen the same complaint in buyer reviews.
- The handle button took a bit of getting used to. It's spring-loaded and it's easy to accidentally press it when you're shaking the basket.
- No built-in shake reminder. You have to set your own timer for the flip. The Chefman has this feature, and I miss it on the Cosori.
Compared to the Ninja DZ201 Foodi 8 Quart
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The Ninja DZ201 costs ~$170, which is double the Cosori. It has two baskets, which is great if you're cooking fries and chicken at the same time. But I've found the DualZone feature is more useful in theory than in practice.
You still have to shake both baskets, you still have to monitor two cook times, and the machine takes up a serious chunk of counter space.
It's 16.9 inches wide and 12.4 inches deep. My shop is a small corner of my kitchen, and the Ninja dominates it.
The fries themselves come out fine in the Ninja. The 6.5-quart capacity per basket means you can cook a full pound of fries without crowding. But the Cosori does the same job in a smaller footprint, and it's quieter. The Ninja has a definite fan whine that I notice after 10 minutes. The Cosori doesn't.
If you're cooking for a HungryMan who needs fries AND chicken tenders AND mozzarella sticks all at once, the Ninja's dual baskets make sense. For a standard batch of frozen fries for two people, the Cosori is the better buy. It's ~$85, it's quieter, and it preheats properly. The Ninja doesn't have a preheat function either. You just set the temperature and wait.
Design
The Cosori TurboBlaze has a 5-quart basket, but I measured the actual cooking surface and it's closer to 4.5 quarts of usable space. That's fine for a pound of fries, which is what the bag recommends for a 5-quart air fryer. But if you're feeding more than two people, you'll need to cook in batches. I've done this. It's not a dealbreaker, but it's worth knowing before you buy.
The touchscreen is intuitive. I've handed this machine to my 87-year-old mom and she made salmon cakes on day one. She didn't need a manual. The controls are labeled clearly, the preheat button is right there, and the temperature and time adjustments are straightforward.
The recipe book that comes with it is a lovely little book with 24 recipes plus a cooking times chart.
The basket is dishwasher-safe. I've run it through at least 50 cycles and the ceramic coating hasn't chipped or flaked. I've seen cheaper machines where the non-stick starts peeling by week three. This one has held up beautifully.
Performance
The frozen fry test: I used a standard bag of crinkle-cut fries, the kind that costs ~$3 at the grocery store. I set the Cosori to 400°F, let it preheat for about 3 minutes, then added the fries in a single layer.
I shook the basket at the 6-minute mark and pulled the fries at 12 minutes. They came out golden brown, crispy on the outside, fluffy on the inside.
Voila!! That's the result I've gotten consistently for six months.
The cake test is where I find hot spots. I baked a simple vanilla cake in the Cosori and it came out evenly browned on all sides. No burnt edges, no doughy center. That tells me the fan placement and heating element design are doing their job.
The TurboBlaze has a 360-degree hot air circulation system, which sounds like marketing language but actually works.
The heat distributes evenly across the basket.
The chicken thigh crisp test: skin crackling, meat cooked through to 165°F, no pink at the bone. I flipped it at the 10-minute mark, which is the one thing you have to remember with this machine. There's no auto-shake prompt, so set a timer.
One word of caution: small food items like skinny fries can slip between the grates. I've seen this in my own kitchen and in buyer reviews. A verified buyer noted in June 2026 that "fries can end up slipping between the grates of the cooking rack." I've seen the same thing.
The fix is to use a perforated basket insert or to cut your fries thicker. Or spend the ~$11 on magnetic strips that hold a paper liner in place.
Just don't put the liner in during preheat. That's a fire risk. I've seen people blame the machine for a fire that was really a liner error.
Durability
I've used the Cosori twice a day for six months. That's over 300 meals. The ceramic coating is intact. The heating element hasn't degraded. The fan is still quiet. The touchscreen still responds instantly. I've dehydrated chicken for my dog, Biscuit, in this machine. He's a 28-pound beagle mix who has learned that the timer means something good is about to hit the floor.
The only issue I've had is the handle button. It's spring-loaded and it's easy to press accidentally when you're shaking the basket. It's not a dealbreaker, but it's a design quirk you should know about.
The Chefman 6 QT, which I bought "at random just because it was a good deal," has real compromises. The basket just won't go back in sometimes. Like it just doesn't slide in well and takes a minute to get perfectly lined up.
There's no off button, so it just waits to be fired up. I unplug it usually 'cause it'll blink for a while.
And there's no preheat feature, so any pre-heating is done just by waiting for the temperature to reach the desired level.
That means your fries go into a cold basket and the cook time is less predictable. I've had batches come out pale and batches come out burnt in the same machine.
Should you buy it?
If you eat frozen fries more than once a week, the Cosori TurboBlaze is the machine to buy. It's ~$85, it's quiet, it preheats properly, and it makes fries that are better than anything you'll get from a fast-food drive-thru. The Ninja DZ201 is worth the extra money only if you need two baskets for simultaneous cooking. Otherwise, save the ~$85 and get the Cosori.
I've bought three of these. One for me, one for my mom, one for my neighbor. The neighbor's husband is 101 and he uses it himself. That's the closest thing to a small miracle I've found in a kitchen appliance. for the Cosori TurboBlaze.
What I'm testing next
I'm working through the Ninja DZ201 for a full 30-day daily-use trial right now. I've had it for two weeks and I'm still not sure if the DualZone feature justifies the counter space. I'll update this when I've got the full spreadsheet.