Those small crosshatch lines cut into a piece of squid or fish can look purely decorative, and sometimes appearance really is part of the reason. But on a chewy piece of ika, those same cuts decide whether the squid gives cleanly when you bite down or fights back like a rubber band. Scoring is a chef's answer to a texture problem, and the fish itself determines whether that answer is even needed. Some neta gets scored because it has to be. Some never gets touched by anything but the slicing knife. The difference comes down to what the tissue is doing, not habit or house style.

Sushi chef scoring ika squid with shallow cross-hatch cuts

Shallow scoring can change how firm seafood such as ika bites apart without cutting all the way through.

Quick Answer: Why Do Sushi Chefs Score Fish?

Scoring is a set of shallow cuts a chef makes across the surface of fish, squid, or shellfish before serving it. The cuts can interrupt tough connective tissue so the piece bites apart more easily, help brushed sauce like nikiri collect instead of sliding off, control curling in certain seafood, and change how a surface browns when torched for aburi. Not every piece gets scored, and the pattern, depth, and purpose all depend on the specific neta in front of the chef. A firm, chewy piece such as thick-cut ika may benefit greatly from scoring, while a soft, already-tender piece may need little or none.

Those Cuts Aren't Just Decoration

There's a name for this in Japanese sushi vocabulary — kazari-bocho, decorative knife work — and it's easy to assume that name means the cuts exist purely to look nice. Some do. A dappled pattern brushed with nikiri catches light and signals that a chef paid attention to presentation.

But a lot of scoring never shows up on the plate at all. Cuts made on the underside of a piece, sometimes called kakushi-bocho, or "hidden knife work," are primarily used to solve a practical texture or preparation problem the diner may never see. The visible pattern and the functional cut aren't always the same thing, and the terminology chefs use for these techniques can vary by region and by who's teaching it. What matters more than the label is the reason behind the cut: is the chef managing how something bites, how it holds sauce, or simply how it looks sitting on the rice.

The Biggest Reason: Changing the Texture

This is where scoring earns its place at the sushi counter. Depending on the seafood, long muscle fibers, connective tissue, skin, or an outer sheath can create resistance when you bite. Left whole, a piece built around one of these structures behaves almost like one continuous sheet. When you bite into it, your teeth have to tear through that entire structure in one go, and that's exactly the sensation people describe as rubbery or elastic — the piece resists, stretches, and springs back before it finally gives.

Scoring interrupts some of those continuous structures before the piece reaches your mouth. Each shallow cut breaks the resistant tissue and shortens how far a bite has to travel before it hits an edge instead of a wall of fiber. Instead of your teeth doing all the work of tearing through one long piece, some of that work has already been done by the knife. The neta shears apart in small, controlled sections rather than resisting as a whole. That's the difference between a piece that feels like it's fighting you and one that seems to fall apart the moment you bite down.

Why Squid Is the Best Example

If you want to see this in action, squid is the clearest case. Ika is built from layered muscle wrapped in a tough outer sheath, and left unscored, it's often the most divisive item on a sushi tray — the piece people describe as chewy, slick, or nearly impossible to bite through cleanly.

A well-placed cross-hatch can change that eating experience dramatically. On a thick piece of squid, the cuts may go surprisingly deep while still stopping short of cutting all the way through. Too shallow, and the scoring barely does anything — it looks fine on the plate, but the tension-holding structure underneath is still intact, and the piece chews the same as if it hadn't been touched. Too deep, and the opposite problem shows up: the slice loses its integrity, tears when it's picked up, and can fall apart before it ever makes it onto the rice.

The target sits in between — deep enough to sever the fibers that are creating the resistance, shallow enough that the piece still holds together as one clean slice. Getting that right isn't something you measure with a ruler. It's something you learn by handling squid and other chewy neta often enough to feel where that line sits.

What I Look For Before I Score a Piece of Seafood

I don't decide to score something because a pattern looks good on the plate. I look at what problem the piece is actually giving me first.

The direction of the fibers matters — cuts across the grain interrupt the structure; cuts running with it barely change anything. How much connective tissue or skin is holding the piece under tension matters too, since a thick sheath or a tough silver skin needs a different approach than soft, loosely structured flesh. Thickness plays into it as well: a thin, delicate slice usually can't take deep cuts without falling apart, while a thicker piece can handle more without losing its shape. Fat content changes the calculation, since oily fish responds differently to scoring than lean fish does. And whether the piece is headed straight onto rice raw, or getting hit with a torch first, changes how I think about where the cuts should sit and how deep they should go.

That same attention to grain direction also matters when slicing sashimi. I explain that relationship in more detail in why sushi chefs turn fish while slicing.

With ika, I can usually feel from the resistance under the knife whether the cuts need to go a little deeper or stay lighter. Two pieces of squid don't always behave exactly the same way, even when I'm preparing them for the same type of nigiri. None of that is a checklist I run through mechanically. It's closer to reading the piece in my hand before the knife ever touches it — feeling how firm or soft it is, how much resistance it has, whether it needs help or whether cutting into it would only cause damage.

Why Scoring Helps Nikiri Stay on the Fish

A smooth, curved piece of fish doesn't give a brushed sauce much to hold onto. Nikiri — a lightly seasoned soy-based glaze that some sushi chefs brush onto neta before serving — tends to slide right off a flat, rounded surface and pool on the plate instead of staying on the fish.

Small grooves change that. They give the glaze somewhere to sit instead of somewhere to run. Instead of a thin film that slides away before it reaches your mouth, the sauce collects in the cuts and stays closer to the surface that actually touches your tongue. It's a small mechanical detail, but it helps the chef keep a more even layer of seasoning where the fish actually meets your tongue. This is also one reason the way sauce is applied matters — I explain the technique in more detail in why sushi chefs brush sauce instead of pouring it.

Small grooves change that. They give the glaze somewhere to sit instead of somewhere to run. Instead of a thin film that slides away before it reaches your mouth, the sauce collects in the cuts and stays closer to the surface that actually touches your tongue. It's a small mechanical detail, but it helps the chef keep a more even layer of seasoning where the fish actually meets your tongue.

What Happens When Scored Fish Is Torched?

Scoring shows up in aburi preparations for a related but slightly different reason. The small ridges a cross-hatch pattern raises above the surface are thinner than the flesh around them, so they heat and brown faster than the thicker interior beneath.

That difference in surface geometry is one reason a chef may choose scoring for certain pieces that will be torched. The raised edges can pick up color and aroma quickly, while the bulk of the fish underneath stays cooler and closer to raw. It's not a guarantee of any particular result — how a piece browns depends on the fish, the fat content, and how the torch is used — but the geometry created by scoring is part of why some pieces develop that contrast between a lightly browned, aromatic surface and a still-raw center.

Different Seafood, Different Cuts

Scoring isn't applied the same way across the board. The pattern, depth, and purpose shift with the ingredient.

Seafood Typical Scoring Style Main Purpose
Ika (squid) Cross-hatch cuts Break up tough fibers, improve bite, hold glaze
Kohada Shallow cuts through the cured skin Ease the bite, give the cured surface somewhere to hold sauce
Fatty tuna (when appropriate) Very fine, shallow cuts Manage sinew and refine texture without weakening the slice
Aji Fine decorative scoring in some preparations Texture and presentation together
Skin-on tai Shallow skin work, often paired with a scald Manage tough skin texture

These aren't fixed rules followed identically at every restaurant. The exact approach shifts with the individual fish, the cut, the thickness, and the chef doing the work.

Matsukawa-zukuri is worth distinguishing from ordinary scoring. The technique primarily uses hot water to treat and tighten sea bream skin; shallow cuts may help control how that skin contracts. In other words, the heat treatment does the main work, while scoring plays a supporting role.

So Why Don't Sushi Chefs Score Every Piece of Fish?

If scoring solves a texture problem, it's natural to wonder why it isn't used on everything. The answer is that not every piece has that problem to begin with.

Soft, delicate fish often has little to gain from aggressive cutting. A fatty, tender slice doesn't need help breaking apart — it's already yielding on its own, and cutting into it too much just weakens the structure that's holding it together. Too many cuts, or cuts that go too deep, can make a slice tear, ruin the clean drape it needs over the rice, or turn a simple piece into something that looks unnecessarily busy on the plate.

The goal was never maximum tenderness across every piece of seafood on the counter. It's matching the technique to what that particular piece actually needs — chewy, sinewy neta gets help; soft, already-tender neta usually gets left alone.

Is Scoring Mainly for Decoration?

Sometimes appearance really is part of the reason a chef reaches for the knife, especially with visible kazari-bocho patterns meant to catch the eye. But reducing scoring to decoration misses most of what the knife is actually doing. For chewy or sinewy seafood in particular, the mechanical effect — breaking up tough tissue before it ever reaches your teeth — matters far more than how the pattern looks sitting on the plate.

Chef's Observation: The hard part was never learning to cut a clean cross-hatch. Anyone can practice that pattern until it looks even. The harder skill is knowing when to stop — a depth that turns a tough piece of squid tender can just as easily wreck a soft, fatty cut that never needed help in the first place. You read the resistance through the blade as you go, and you adjust to the piece in your hand, not to a pattern you decided on before you started cutting.

That kind of control also depends on letting a sharp blade do the cutting instead of forcing it through the fish. The same principle is behind why sushi chefs slice fish in one long pull.

Frequently Asked Questions

Does scoring fish actually make it more tender?

For firm, sinewy, or chewy seafood, yes — the cuts interrupt the connective tissue that creates resistance, so the piece bites apart more easily. For already-soft fish, scoring does far less, since there's little tough structure to interrupt in the first place.

Why do sushi chefs score squid?

Squid is naturally tough and elastic because of its layered muscle structure. Cross-hatch scoring breaks that structure into smaller sections so it doesn't feel like chewing something that keeps springing back.

Is kazari-bocho only decorative?

Not usually. Visible decorative scoring can add to presentation, but for many types of seafood the same cuts are doing real mechanical work on texture, sauce retention, or both at once.

Why don't sushi chefs score every piece of fish?

Because scoring is used to solve a specific texture, skin, sinew, seasoning, or presentation problem. If the fish is already soft and tender, extra cuts may weaken the slice without improving the bite.

Final Thought

The pattern is the part a diner can see, but it's not really the point. The actual skill is deciding whether a given piece needs scoring at all, and if it does, cutting only deep enough to change how it eats without weakening the piece itself. A clean cross-hatch is easy to copy. Knowing when to leave the knife alone is the part that takes longer to learn.