Stiff or Flexible? Choosing the Best Boning Knife

A boning knife does the jobs a chef’s knife is too wide and too stiff for. In a Mexican kitchen that means taking the bone out of a pork shoulder before it goes into an adobo for al pastor, splitting chicken thighs off the frame for tinga, trimming silverskin from a flank steak before it hits the grill for fajitas, and cleaning the fat cap off a brisket or a beef cheek before a long braise. The blade is narrow so it can turn around a joint, and the point is sharp so it can follow a bone without tearing the meat.

Buying one comes down to two choices: stiff or flexible, and curved or straight. This guide explains both, then compares nine boning knives from Victorinox, Zwilling, Wüsthof, Mercer, Dexter-Russell, Mac, Shun and Global, using the specifications each maker or listing states and the published findings of America’s Test Kitchen, which we cite.

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Quick verdict: which boning knife to buy

Below, the five standouts side by side, then all nine boning knives in full.

Five boning knives compared

Our five standout picks, one for each kind of cook, with the specifications each maker or listing states. All nine are reviewed in full below.

Product images from Amazon. Blade lengths, flex and steels are as stated by each maker or listing; check the listing before you buy.

Our picks for the best boning knife

These nine knives cover the ways a boning knife gets used: flexible blades for chicken and pork that hug the bone, semi-stiff and stiff blades for heavier cuts and fat caps, a Japanese honesuki for poultry joints, and forged knives that match a German or Japanese set. Each pick explains who it suits and gives one honest reason to skip it. If you clean whole fish, a longer, thinner fillet knife does that job better; see our guide to the best fish knife set.

Stiff or flexible, curved or straight

These two choices matter more than the brand. Get them right for the meat you cut most and almost any knife on this list will serve you well.

Flexible blades bend a little under pressure, so the edge stays against the bone as it curves. America’s Test Kitchen puts it this way: a boning knife “has to have a certain degree of give so that it can bend and maneuver around bones, cartilage, and joints”, and in its testing overly rigid blades “couldn’t hug the breastbone on a piece of chicken or the bone in a pork shoulder”. Choose flexible for chicken, pork shoulder and lamb, and for taking skin off fish.

Stiff and semi-stiff blades push through connective tissue and stay straight when you lean on them. They are better for large beef cuts, pork loins and ribs, and for long trimming strokes under a fat cap. A Japanese honesuki is the stiffest of all, built to cut through poultry joints rather than around them.

Straight blades keep the whole edge in contact with the board and the bone, which gives control on smaller work. America’s Test Kitchen had “a slight preference for blades that were fairly straight”, though it noted that curved blades had their fans too.

Curved blades lift the edge upward toward the tip, which makes it easier to slide under silverskin, follow the curve of a rib or skin a large cut without the handle hitting the board.

How to choose a boning knife for your kitchen

1. Match the flex to the meat

Mostly chicken and pork shoulder: flexible. Mostly beef and big pork cuts: stiff or semi-stiff. Lots of whole chickens: consider a honesuki. If you cut everything, a moderately flexible straight blade, like our top pick, is the safest middle ground.

2. Length: 5 to 6.5 inches

Every knife here falls between 5.5 and 6.25 inches. Shorter is nimbler inside a chicken; longer reaches across a pork shoulder or brisket in fewer strokes. Six inches is the common size for a reason.

3. A handle that grips when greasy

Boning is wet, fatty work. Textured plastic handles, like the Victorinox, Mercer and Dexter-Russell, grip well when your hands are slick. Wood-composite and metal handles look better but can feel slippery, so a dry towel nearby helps.

4. Steel and edge

Softer German and Swiss steels are more forgiving if the edge meets bone; harder Japanese steels stay sharp longer and cut more cleanly but can chip. A boning knife should slice along bones, not pry at them, whatever the steel. Hone it before each session; our guide to the best knife sharpener covers keeping the edge.

5. Care and hygiene

Only the Victorinox knives and the Zwilling are rated dishwasher safe by their makers, and even Zwilling recommends hand washing. Wash a boning knife in hot, soapy water as soon as you finish with raw meat, dry it, and keep it apart from the knives you use for vegetables.

How we chose these nine boning knives

We started from what a restaurant kitchen asks of a boning knife: a narrow blade that follows bones closely, a point that gets into joints, a handle that stays secure when it is greasy, and an edge that is easy to keep sharp through a session of trimming pork shoulders or breaking down chickens. We then narrowed the field to knives from established makers that were sold on Amazon in the United States and in stock when we checked, with specifications we could confirm on the maker’s website or the brand’s own Amazon listing (each review says which). We covered flexible, semi-stiff and stiff blades, straight and curved shapes, stamped and forged construction, and a Japanese honesuki, rather than repeating near-identical knives. For how boning knives perform, we relied on America’s Test Kitchen’s review of flexible boning knives, and we say so wherever we quote it. We left out knives that were out of stock or low on stock, including the Zwilling Pro that won that review and the original Shun Classic, and unbranded listings. We have not used these products ourselves; where we describe how a knife performs, we say whose findings those are.

Using a boning knife on pork shoulder and chicken

Pork shoulder for al pastor or carnitas. Set the shoulder skin side down. Find the flat blade bone with the tip, then keep the edge angled toward the bone and cut along both faces in short strokes, peeling the meat back with your other hand as you go. Once the bone is free, open the shoulder out flat, trim off any thick fat and gristle, and slice it into even slabs for marinating. Our guide to what al pastor is explains where those slabs go next.

Chicken thighs. Lay the thigh skin side down and run the tip along both sides of the bone, then cut under it and lift it out, scraping the knuckle free at each end. A flexible blade or a honesuki makes this a few seconds’ work per thigh.

Trimming. For silverskin on a tenderloin or flank steak, slip the tip under one end, angle the edge slightly up into the membrane and pull the knife along while holding the membrane taut. A curved blade makes this easier.

Boning knife questions, answered

What is the best boning knife for home use?

The Victorinox Fibrox Pro 6-inch Flexible Boning Knife suits most home cooks: it is moderately flexible, light, inexpensive and dishwasher safe according to Victorinox, and America’s Test Kitchen named it a co-Best Buy in its boning knife review.

Which boning knife does America’s Test Kitchen recommend?

In its review of flexible boning knives, America’s Test Kitchen named the Zwilling Pro 5.5-inch Flexible Boning Knife its winner, and the Victorinox Fibrox Pro Boning Knife and a Friedr. Herder Don Carlos curved knife as Best Buys. The Zwilling Pro was low on stock when we checked, so we list the Zwilling Four Star, a sibling with the same length and flexible blade.

Which boning knife brands are worth buying?

Victorinox, Mercer and Dexter-Russell make the stamped, commercial-kitchen knives that most butchers and line cooks use. Wüsthof and Zwilling make forged German knives, and Shun, Mac and Global make Japanese knives with harder steel.

Is a boning knife the same as a fillet knife?

No. A fillet knife is longer, thinner and more flexible, made to bend along a fish’s backbone and take the skin off. A boning knife is shorter and firmer for meat and poultry. Some knives, like the Shun, are sold for both.

Can I bone a chicken with a chef’s knife?

You can, but a chef’s knife is wide and stiff, so it is harder to follow small bones and you leave more meat behind. A boning knife or a honesuki is easier and safer for the job. For everything else on the board, see our guide to the best chef knife.

Our pick for pork shoulders and whole chickens

Buy the Victorinox Fibrox Pro 6-inch Flexible Boning Knife if you want one boning knife that handles chicken, pork and trimming with minimal fuss. Choose the curved, semi-stiff Victorinox or the stiff Mercer if most of your boning is on pork and beef, the Zwilling Four Star or Wüsthof Classic if you want a forged knife to match a German set, and the Mac honesuki if whole chickens are your weekly job. Keep it sharp, keep it apart from your vegetable knives, and wash it as soon as you finish.

More specific guides: the best boning knives for deer and the best carving knife brands.

On a budget? See our guide to the best value boning knives.

Related guide: Best fillet knife.

Related guide: Best boning knife for chicken.

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Related guide: Boning knife vs fillet knife.

A boning knife is one specialist in a full knife kit; our guide to the best knife set covers the rest. For slow-cooked meat worth all that trimming, read what barbacoa is, and if you would rather someone else did the butchering tonight, see the menu or call to order.