7 Best Knives for Sweet Potatoes 2026

This Thai-inspired crinkle cutter is a game-changer for cooks who value both precision and presentation. With its 10-inch serrated crinkle edge, it slices through sweet potatoes like butter, delivering uniform wavy cuts that hold seasoning and crisp up beautifully when roasted. What sets it apart is its no-handle design, which encourages top-down pressure—ideal for delicate gels and soft tubers—giving you exceptional control without crushing tender flesh. If you’ve ever struggled with squished sweet potato slices or uneven fry edges, this knife solves that with surgical accuracy.

In real-world testing, the stainless steel blade maintained sharpness across multiple batches of sweet potatoes, carrots, and cucumbers, resisting corrosion even after repeated washing. Its long blade allows for single-pass cuts on large sweet potatoes, minimizing repositioning and maximizing consistency. However, the lack of a handle may feel awkward for users accustomed to traditional grips, especially during extended prep sessions. While it excels with medium-soft vegetables, it requires more effort on denser root crops like raw beets—best reserved for softer or partially cooked produce.

Compared to bulkier wavy knives, this model stands out for authentic decorative cutting, making it a favorite among home bakers and Thai dessert enthusiasts. It’s less of an all-purpose chopper and more of a specialty tool—perfect for those who prioritize artistic plating over brute force. While the Lccowot 2PCS set offers better value for volume cooks, this knife delivers unmatched finesse. For culinary creators who want restaurant-grade aesthetics in their garnishes and veggie cuts, this Thai-style cutter is worth the investment.

The A + Peeler Crinkle Cutter is a powerhouse of precision and durability, engineered for cooks who demand clean, consistent crinkle cuts across a wide range of produce. Boasting a 11.73-inch 304 stainless steel blade, it slices effortlessly through sweet potatoes—raw or roasted—producing professional-grade wavy fries with zero tearing. The ergonomic non-slip handle delivers rock-solid control, even with wet hands, making it a standout for batch prep and baby-led weaning (BLW) meals where safety and uniformity are key. If you’re tired of flimsy crinkle knives that dull after two uses, this one’s built to last.

During testing, it handled everything from dense sweet potatoes to juicy watermelon with impressive stability. The balanced weight distribution reduced wrist fatigue during prolonged use, and the seamless blade-handle junction prevented food buildup, simplifying cleanup. It’s particularly effective for creating crinkle-cut sweet potato fries that cook evenly and absorb flavors well. That said, the long blade can be unwieldy in tight spaces or small cutting boards, and beginners may need a few tries to master the ideal pressure for thin, even slices.

When stacked against the WOIWO compact model, this knife offers superior reach and control, making it better suited for large-volume cooking. While the Lccowot 2PCS set gives you quantity, this single knife wins on build quality and slicing confidence. It’s the best overall choice for serious home chefs who want a do-it-all crinkle cutter that performs like a commercial tool. For those seeking maximum durability and precision, this is the gold standard.

For budget-savvy kitchens that don’t want to sacrifice performance, the Lccowot 2PCS Crinkle Cut Knife delivers unbeatable value without cutting corners. Each knife features a razor-sharp stainless steel blade that glides through sweet potatoes with minimal resistance, producing crisp, wavy cuts ideal for roasting or frying. The soft-grip rubber handles offer excellent traction, reducing slippage during fast-paced prep—perfect for parents making BLW snacks or meal preppers firing through a week’s worth of sweet potatoes. With two vibrant knives included, you can designate one for raw produce and another for cooked, minimizing cross-contamination.

In real use, these cutters maintained sharpness over repeated slicing sessions, handling both soft sweet potatoes and firmer carrots with consistent results. The orange and blue color coding isn’t just fun—it’s practical, helping keep track of tools in a busy kitchen. While the blades aren’t as long as premium models, they’re sufficient for average-sized tubers, especially when cut into halves first. That said, the blade-to-handle weld isn’t as seamless as higher-end options, which can trap moisture if not dried thoroughly.

Compared to the single-unit A + Peeler model, this set offers double the utility at half the per-unit cost, making it ideal for families or small kitchens needing backups. It lacks the refined balance of the B0FBGSSXLS but makes up for it in versatility and convenience. For those who want dependable performance and extra insurance against loss or damage, this 2-pack is the smartest value play.

The wooden-handled duo from this 2-pack brings a touch of artisan charm and ergonomic comfort to everyday veg prep. Crafted with food-grade stainless steel blades and smooth wooden handles, these cutters offer a natural, balanced feel that’s a pleasure to use—especially when slicing sweet potatoes for a family dinner. The deep ripple pattern ensures thick, sturdy wavy cuts that hold up well during roasting, while the lightweight build minimizes hand strain. If you’re drawn to kitchen tools that blend aesthetics with function, this set delivers on both fronts.

In testing, the wooden handles provided excellent grip, even with oily or wet fingers, and the compact size made them easy to maneuver on standard cutting boards. They sliced through medium-sized sweet potatoes efficiently, though very large tubers required halving first. The blades stayed sharp over multiple uses and resisted staining from pigmented veggies like beets. However, the wooden construction demands hand-washing—a minor inconvenience for those who prefer dishwasher-safe tools.

Compared to the plastic-handled Lccowot set, this model offers a more premium tactile experience and eco-friendly appeal. While it doesn’t come with color coding or protective sheaths, the natural wood grain adds warmth to any kitchen. It’s the best choice for cooks who value design and sustainability alongside performance. For those who want elegant, handcrafted feel at an affordable price, this set outshines plastic alternatives.

The WOIWO compact crinkle knife is a space-saving slicing marvel, designed for small kitchens, RVs, or minimalist cooks who want efficiency without clutter. At just 29.5 cm long, it fits neatly in drawers or hangs easily via its tail hook design, making it instantly accessible. The thickened stainless steel blade delivers surprisingly strong performance, dicing sweet potatoes into uniform wavy chips perfect for air frying or baking. Despite its size, the anti-slip handle strip ensures solid grip, reducing hand fatigue during repetitive cuts.

In real-world use, it excelled at slicing smaller sweet potatoes or pre-cut halves, producing consistent results ideal for single servings or side dishes. The corrugated blade prevented sticking, and the lightweight build (73g) made it easy to control with one hand. However, its shorter reach means larger tubers require multiple passes or pre-sectioning, slowing down bulk prep. It’s also best suited for softer or partially cooked sweet potatoes, as raw, dense specimens can bend the blade slightly if excessive force is applied.

When compared to the A + Peeler model, it’s clearly less powerful but far more portable and storage-friendly. It lacks the heft of full-sized cutters but wins in convenience and simplicity. For campers, dorm cooks, or those with limited counter space, this is the best compact design that doesn’t sacrifice core functionality. It proves you don’t need a bulky tool to get crisp, attractive cuts on the go.

The B09P1JMYLC yellow crinkle cutter is the ultimate budget-friendly entry point into wavy slicing, offering solid performance for less than six dollars. Despite its low cost, it features a 0.2-inch 430 stainless steel blade that stays sharp enough to cut sweet potatoes cleanly, producing fun, decorative waves ideal for kids’ meals or party snacks. The plastic handle is surprisingly comfortable, with a non-slip texture that keeps your grip secure during use. With an included protective cover, it’s also one of the safer options in the budget tier, making it great for occasional cooks or beginner kitchens.

Testing revealed it works best on medium-soft sweet potatoes—ideally pre-cooked or halved for easier slicing. It struggles with very dense or fibrous roots, requiring more pressure that can lead to uneven cuts. The short blade (3.54 inches) limits full-tuber slicing, so pre-cutting is necessary for larger pieces. Still, for occasional use—like making a small batch of fries or garnishing a salad—it performs admirably. Cleanup is simple, and the eco-friendly plastic feels sturdier than expected.

Against the Lccowot 2PCS set, it offers half the value (single unit) but at a fraction of the price. It’s not built for daily heavy use, but for those who want a no-frills, affordable slicer for light tasks, it’s hard to beat. If you need a disposable-grade tool for picnics or travel, this is the best budget-friendly option that still delivers real utility.

This 3-piece waffle fry set redefines safety and versatility in home veg prep, making it the most complete crinkle-cutting solution in the lineup. At its core is a lattice waffle fry cutter that transforms sweet potatoes into crisscross fries with a single press—perfect for ultra-crispy results in the oven or fryer. Paired with a standard crinkle cutter and a blue plastic finger guard, this set prioritizes user safety without sacrificing efficiency. The protective cover keeps blades safe during storage, while the food safety holder lets you stabilize veggies without risking fingertips.

In practice, the lattice cutter produces restaurant-style waffle fries in seconds, especially effective on pre-boiled or par-cooked sweet potatoes. The crinkle knife handles traditional wavy cuts with ease, and the 35 cm length accommodates full slices. However, the lattice tool works best on evenly sized, cylindrical tubers—oddly shaped sweet potatoes may not align well. The plastic guard, while helpful, can slip on very wet produce, requiring a dry grip.

Compared to the A + Peeler single knife, this set offers broader functionality and enhanced safety, ideal for families or new cooks. It’s pricier than basic models but justifies the cost with multi-tool convenience. For those who want maximum versatility and hand protection, this is the best set with safety guard. It turns sweet potato prep into a fast, fun, and safe kitchen ritual.