Japanese Knife Buying Mistakes: 7 to Avoid

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Updated June 2026 · 8 min read · UK Japanese knife specialists

Buying your first proper Japanese knife should be exciting, not stressful. But it's an area where it's easy to spend more than you need to, or end up with a knife that doesn't suit how you actually cook. We sell these knives every day, and the same handful of avoidable mistakes come up again and again.

This guide walks through the seven we see most often — what they cost you, and the simple way to get it right. The short version: most home cooks need one versatile knife in good high-carbon stainless steel, a sensible budget of around £50–£90, and a way to keep it sharp. If you remember nothing else, start with our santoku or gyuto and a whetstone.

The 7 most common Japanese knife buying mistakes

1. Buying a big block set when you only need one or two knives

A 9- or 12-piece block looks like value, but most kitchens use the same two or three knives for almost everything. The rest sit in the block gathering dust — and you've paid for blades you'll rarely pick up. A single, excellent chef's knife will do 80–90% of your prep on its own.

Do this instead: start with one versatile knife and add a paring or utility knife only if you find you need it. If you genuinely want a matched set — for a new kitchen or a gift — buy a focused 3–5 piece set rather than a wall of blades. We compare the two routes properly in knife set or single knife: which is better value?

2. Assuming you have to spend a fortune

Above roughly £150 for a single home knife, most of what you're paying for is finish and prestige rather than a sharper edge. A £50–£90 VG10 Damascus blade from a specialist will out-cut almost any supermarket knife and hold its edge for months. Spending £300 on a single knife rarely makes you a better cook.

Do this instead: set a realistic budget, buy the best blade within it, and put any spare money toward a whetstone. Our highest-rated everyday knives sit comfortably under £90.

3. Buying the wrong knife type for how you actually cook

A nakiri is brilliant on vegetables but awkward on a joint of meat. A long sujihiki is made for slicing, not everyday chopping. If you buy a specialist shape because it looked the part, it may not match the food you prep most.

Do this instead: for an all-rounder, choose a gyuto (the Japanese chef's knife, great for meat, fish and veg) or a santoku (a little shorter, superb on vegetables and everyday tasks). Our guide to the types of Japanese kitchen knives explains which shape suits which cook.

4. Ignoring the steel — and thinking "Damascus" is a type of steel

This is the most common misunderstanding we hear. "Damascus" describes the wavy, layered pattern on the blade, not the steel itself. The part that actually cuts is the hard steel core inside — usually VG10 or AUS-10 high-carbon stainless, hardened to around 60–61 HRC. That hardness is what gives a Japanese knife its keen, long-lasting edge.

Do this instead: check the core steel, not just the looks. VG10 and AUS-10 are excellent, low-maintenance choices for UK home cooks. If you'd like the full picture, read what is Damascus steel? before you buy.

5. Overlooking the handle and balance

A knife you'll use daily has to feel right in your hand. Handle shape (Japanese octagonal or a Western contoured grip), the material, and where the knife balances all matter more than another decimal point of hardness. A blade that feels nose-heavy or too light will never feel like an extension of your hand.

Do this instead: think about grip and weight, not just the blade. Wooden and stabilised-resin handles both wear well; pick the one that suits your hand and your kitchen. Every knife we sell is double-bevel with a symmetrical handle, so it works equally well for left- and right-handed cooks.

6. Forgetting the care commitment

Hard Japanese steel rewards a little care. The two things that ruin these knives fastest are the dishwasher and being left wet — and using the blade on glass, stone or a ceramic plate will chip that fine edge. None of this is difficult, but it does need to become a habit.

Do this instead: hand-wash, dry straight away, and cut on wood or a soft poly board. That's genuinely all it takes. Our complete knife care guide covers it in two minutes.

7. Not budgeting for sharpening

Even the best knife dulls with use. People often spend their whole budget on the blade, then let it go blunt — which is when most kitchen accidents happen, because a dull knife needs more force and slips. A pull-through sharpener will also strip metal and ruin a fine Japanese edge.

Do this instead: set aside around £30–£60 for a whetstone. A 1000/6000-grit combination stone keeps a Japanese knife genuinely sharp for years. New to it? Our step-by-step whetstone guide makes it simple.

How to choose the right Japanese knife

Boil the decision down to four questions and you'll avoid every mistake above:

• What do you cook most? Mixed prep → gyuto or santoku. Mostly vegetables → a nakiri or santoku. Don't buy a specialist shape you won't use.
• What's your honest budget? £50–£90 buys an excellent everyday VG10 knife. There's no need to go higher for your first one.
• Single knife or set? Most people are best starting with one. Choose a set only for a full new kitchen or a gift.
• Will you look after it? Hand-wash, dry, cut on wood, and keep a whetstone handy.

If you're still narrowing it down, our guide to your first knife size and the beginner's buying guide go deeper.

What to buy instead — four safe choices

Each of these avoids the mistakes above: versatile shapes, proven high-carbon stainless steel, honest prices, and strong customer ratings. All are in stock at Santoku Knives.

Quick comparison

Knife	Price	Best for
Haruta 8" Gyuto	£89.99	One versatile everyday knife
Aiko Black Damascus	from £64.99	Highest rated; build a set over time
Riku VG10 — best value	from £49.99	A first Japanese knife on a budget
Whetstone Sharpening Stones	£59.99	Keeping any knife sharp

Frequently asked questions

What is the single biggest mistake when buying a Japanese knife?

Buying a large block set when you only need one or two knives. Most cooks do nearly all their prep with a single chef's knife, so a great gyuto or santoku is almost always better value than a wall of blades you won't use.

How much should I spend on my first Japanese knife?

Around £50–£90 buys an excellent everyday VG10 Damascus knife in the UK. Spending more mostly adds finish and prestige rather than sharpness, so for a first knife there's little reason to go higher — put any spare budget toward a whetstone.

Is "Damascus" a type of steel?

No. Damascus refers to the layered, wavy pattern on the blade, not the steel itself. The cutting core is usually VG10 or AUS-10 high-carbon stainless steel, hardened to about 60–61 HRC — that's what gives the edge its keenness and longevity.

Gyuto or santoku for a first knife?

Both are excellent all-rounders. A gyuto (the Japanese chef's knife) is a little longer and great across meat, fish and veg; a santoku is shorter and especially good on vegetables and in smaller kitchens. Choose by the food you prep most and the board you cut on.

Can I put a Japanese knife in the dishwasher?

No — the dishwasher is one of the fastest ways to ruin a good knife. Hand-wash it, dry it straight away, and store it safely. Hard Japanese steel is low-maintenance, but it does need this small habit.

Do I really need a whetstone?

If you want your knife to stay genuinely sharp, yes. Avoid pull-through sharpeners, which strip metal and damage a fine Japanese edge. A 1000/6000-grit combination whetstone keeps the blade sharp for years and is easy to learn.

Are Japanese knives suitable for left-handed cooks?

Every knife we sell is double-bevel with a symmetrical handle, so it works equally well in either hand. The only knives that are handed are traditional single-bevel blades such as the yanagiba or usuba — which we don't stock for everyday use.

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