What are the common misunderstandings about looking after a cutting board?
This answer is a draft. It stays unpublished until legal review and source verification are complete.
The cutting board is one of the kitchen tools where bacteria linger most, and "wood or plastic?" is an argument that never ends in any country. In Japan, the Ministry of Health, Labour and Welfare's approach to preventing food poisoning at home is the foundation for the answer.
What to go on
| Item | What to do | Basis |
|---|---|---|
| Separate boards | One board for raw meat and fish, another for vegetables and cooked food. With one board, cut vegetables first, then meat and fish | MHLW "Six points for preventing food poisoning at home" (don't contaminate) |
| Washing | Straight after use, with detergent and a sponge. After meat or fish, pour boiling water over it | Same |
| Disinfecting | About once a week: chlorine bleach (a few minutes at the concentration on the label) → rinse thoroughly, or boiling water | Same |
| Drying | Stand it up in a well-ventilated place until completely dry | Left damp, bacteria and mould grow |
| Wooden boards | Boiling water is fine; some bleaches damage the wood. After washing, wipe at once and stand up. If it warps or blackens, have it planed | — |
| Replacing | Deep scratches, black staining or warping are the signs | — |
- In the 2023 (Reiwa 5) food-poisoning statistics, Campylobacter (chicken) and Anisakis (fish) were at the top of the count by causative agent. Cutting vegetables on a board used for raw chicken is one of the typical causes at home.
- Cutting meat and fish last, or opening out a milk carton to use as a disposable board, are tricks widely shared among people living in Japan.
[Verify] Check the wording of the six points and the ranking of causative agents in the food-poisoning statistics with the Ministry of Health, Labour and Welfare.
Misunderstanding 1｜Wooden boards are unhygienic
Some research finds that bacteria in the scratches of wood decline as it dries, and wood versus plastic is generally described as "it depends on the care." The key point is whether you can dry it.
Misunderstanding 2｜Plastic can be fully disinfected with bleach
Bleach struggles to reach the bottom of scratches, and a heavily scratched board can keep bacteria even after disinfecting. Once scratches are obvious, replacing it is the realistic answer.
Misunderstanding 3｜Boiling water removes the residue after meat
Protein sets with heat and sticks on. The order is wash with detergent first, then boiling water.
Misunderstanding 4｜One board is enough if you use the two sides for different things
Dirt works its way round the edges and joins, and the two sides mix when you wash it. Two boards in different colours, or a thin board sheet reserved for meat and fish, is the practical approach.
Misunderstanding 5｜The dishwasher disinfects it
Wooden boards warp and crack in the dishwasher; with plastic, check the heat tolerance. If a board is labelled dishwasher-safe, a hot wash is effective.
---
Sources
- Ministry of Health, Labour and Welfare, "Six points for preventing food poisoning at home" [家庭でできる食中毒予防の6つのポイント]
https://www.mhlw.go.jp/www1/houdou/0903/h0331-1.html
- Ministry of Health, Labour and Welfare, "Food poisoning statistics" [食中毒統計資料] (by causative agent)
https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/kenkou_iryou/shokuhin/syokuchu/04.html
- Tokyo Metropolitan Bureau of Public Health, "Food Hygiene Window — Preventing food poisoning at home" [食品衛生の窓 家庭での食中毒予防]
https://www.hokeniryo.metro.tokyo.lg.jp/shokuhin/
⚠️ Editorial note: the source URLs above were identified by search. Our working environment cannot reach go.jp domains, so the contents have not been checked against the text. Verify every source before publication and record who checked it and when.
About this article
What we share here are ideas and everyday practices passed down among people living in Japan, together with general information drawn from public sources. They are not official recommendations, and they are not professional instruction. Practices vary between households and regions.
This is general information. Results vary from person to person and depend on your own conditions and surroundings.
Please decide for yourself, using your own judgement, whether any of this suits your situation. We cannot accept responsibility for any damage, loss or injury arising from following this article.
Some ingredients need thorough cooking. Eat raw only foods that are sold for raw consumption. If you have allergies, check the ingredients.
Sources
Tell us if this has changed
Approved contributions keep the contributor's name, shown in five languages.
Related questions
Other languages：日本語 ／ 简体中文 ／ 繁體中文 ／ 한국어
Value Village is not a government body. Always confirm procedures on the official site.
Written by Value Village from public sources. Nothing here is reproduced from another site.