Japanese Knives for Beginners: What a Home Kitchen in Japan Actually Has
Written in Japan · Updated August 2026
There is a gap between the Japanese knives that go viral and the Japanese knives that Japanese people own. Almost every home kitchen here runs on two stainless double-bevel knives and one medium whetstone. That is the whole system.
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No. 1
Santoku Knife, Stainless, 165-180mm · $60-140
Santoku means three virtues — fish, meat, vegetables. It is the default knife here in the way a chef's knife is the default in the West, but it is shorter, thinner and lighter, with a flatter edge suited to chopping straight down rather than rocking.
- 165mm for smaller hands, 180mm is the common size
- Stainless is the correct beginner choice, not carbon steel
- Chop down, do not rock — the flat edge is not made for it
Link coming soon
No. 2
Petty Knife, 120-150mm · $35-80
The second knife in nearly every Japanese kitchen. Sized between a paring knife and a chef's knife, so it handles fruit, garlic and boning a chicken thigh without dragging out the santoku. If you buy two knives, buy these two.
- 150mm is more useful than 120mm for most people
- Handles anything you would use a paring knife for, and more
- Cheaper than the santoku, so a good place to test a brand
Link coming soon
No. 3
Nakiri Knife (Optional Third) · $50-110
Rectangular, completely flat edge, vegetables only. It is genuinely faster than a santoku for cabbage and daikon because the whole edge meets the board at once. Buy this third, not first.
- Flat edge means no rocking at all
- Not for meat, not for bones
- Skip it unless you cook a lot of vegetables
Link coming soon
No. 4
Whetstone, #1000 Grit · $25-50
One stone is enough. The internet will sell you a #400 and a #6000 as well, and a home cook will use neither. A #1000 restores a working edge in a few minutes and that is the edge you actually want for daily cooking.
- Soak it in water for ten minutes before use
- Sharpen every few weeks, not every few months
- A #6000 finish looks impressive and dulls just as fast
Link coming soon
No. 5
Non-slip Whetstone Base · $10-20
A stone that slides while you are sharpening is how people cut themselves and ruin the angle at the same time. A rubber base costs almost nothing and it is the difference between sharpening working and not working.
- A damp folded towel works too, but slips eventually
- Get the type that holds the stone at the ends
- Under $15
Link coming soon
No. 6
Rubber Cutting Board · $40-90
This is what professional kitchens in Japan use, and it has quietly moved into homes. Synthetic rubber is softer on an edge than plastic, does not absorb odour like wood, and does not warp. It is heavy, which is a feature.
- Far kinder to a thin Japanese edge than plastic
- Does not crack or split like wood
- Heavy enough that it does not move while cutting
Link coming soon
No. 7
Rust Eraser · $6-14
Even stainless will spot if it is left wet, especially where the blade meets the handle. A rust eraser is a rubber block with abrasive in it that takes the spots off in about thirty seconds. Every Japanese hardware shop sells them and almost nobody outside Japan owns one.
- Works on spots, not on deep pitting
- Cheap, lasts for years
- Also works on scissors and garden tools
Link coming soon
No. 8
Blade Guard (Saya) · $8-18
If the knives are going in a drawer rather than on a magnetic strip, they need covers. A thin Japanese edge chipping against another knife in a drawer is the most common way a good knife gets ruined here.
- Match the guard length to the blade, not roughly
- Cardboard and tape works in an emergency and looks it
- A magnetic strip on the wall is the better answer if you have space
Link coming soon
How to choose
Stainless or carbon steel?
Stainless, unless you already know you want carbon. Carbon takes a better edge and rusts if you leave it wet for twenty minutes. Japanese home cooks overwhelmingly use stainless — carbon belongs to people who wipe the blade between every ingredient.
Single bevel or double bevel?
Double. Single-bevel knives — yanagiba, deba, usuba — are professional tools sharpened on one side only, and they are handed. They are what appears in videos and they are not what is in Japanese homes. A santoku and a petty are both double bevel.
How much should a first knife cost?
Around $70 to $100 for the santoku. Below about $40 the steel will not hold an edge long enough to be worth sharpening. Above $200 you are paying for the cladding pattern and the handle, not for cutting.
Do I need a knife block?
No. Blocks trap moisture and blunt edges as knives are pushed in and out. A magnetic wall strip or individual blade guards are both better.
Questions
Can Japanese knives go in the dishwasher?
No. Heat and detergent will damage the handle and dull the edge, and a thin blade knocking against the rack will chip. Wash by hand, dry immediately. This is not fussiness — it is the main reason imported knives fail abroad.
Can I cut frozen food or bones?
No. Japanese knives are thin and hard, which means they chip rather than bend. Frozen food, bones and squash all risk taking a piece out of the edge. Keep a cheap heavy Western knife for those jobs.
Is a pull-through sharpener good enough?
It will make a knife cut again and it will also take metal off at the wrong angle. On a $30 knife that is a fair trade. On a $100 Japanese knife it slowly destroys the geometry you paid for. The whetstone is worth the twenty minutes it takes to learn.
How often should I sharpen?
When it stops cutting a tomato skin without pressure. For most home cooks that is every three to six weeks. Sharpening often and lightly is easier than rescuing a badly dull knife.
Are Japanese knives sharpened at a different angle?
Yes, roughly 15 degrees per side against about 20 for Western knives. That is why they feel sharper and why they chip if you treat them like a Western knife. If you use a guided sharpener, set it accordingly.