Which chopping board should I use?

Wood versus plastic, how many you need, and the care that keeps a board hygienic and your knives sharp.

Difficulty: beginner
Time: 15 min
Read: 2 min
Safety: caution

Short answer

Wood is kinder to knives and naturally antibacterial; plastic is dishwasher-safe and easier to sanitise. Both are fine — the important thing is having a separate board for raw meat and replacing any board that is deeply scored.

The wood-versus-plastic argument is largely settled: both are safe when properly cleaned. What matters far more is having enough boards to keep raw meat separate, and replacing them when the surface becomes too scored to clean.

Safety

Use separate boards for raw meat and for ready-to-eat food, or wash thoroughly with hot soapy water in between. Cross-contamination from raw meat is one of the most common causes of food poisoning at home.

What you'll need

At least two boards (optional)
Food-safe mineral oil for wood (optional)

Step by step

Have at least two boards.One for raw meat and fish, one for everything else. This single change removes the main cross-contamination risk in a home kitchen.
Choose wood for your main board if you care about knives.Wood and end-grain wood are far gentler on an edge than plastic, glass or bamboo. Glass and stone boards ruin knives quickly.
Choose plastic for raw meat.It goes in the dishwasher, which sanitises it thoroughly. That is the practical argument, and it is a good one.
Avoid glass, stone and hard bamboo for general use.They blunt knives rapidly and food slides on them. They are chopping-adjacent surfaces rather than chopping boards.
Wash wooden boards by hand, immediately.Hot soapy water, rinse, and stand on edge to dry. Never soak or dishwasher a wooden board — it will warp and split.
Oil wooden boards regularly.Food-safe mineral oil monthly at first, then a few times a year. It stops the wood drying, cracking and absorbing moisture.
Put a damp cloth under the board.It stops it sliding, which is a real safety improvement when using a sharp knife.
Replace deeply scored boards.Once cuts are deep enough to trap food and resist cleaning, the board cannot be made hygienic. That applies to wood and plastic alike.

Tips

Colour-coded boards make separation obvious to everyone in the household, which matters more than any individual's good intentions.
A large board is more useful than a small one. Most home boards are too small, which is why food ends up on the counter.
Sand and re-oil a wooden board that has become rough or stained. It restores it completely and takes twenty minutes.

Common mistakes

Using one board for everything — Cross-contamination from raw meat to ready-to-eat food is a leading cause of home food poisoning.
Putting a wooden board in the dishwasher — The heat and prolonged water exposure warps it, splits it and destroys the glue in laminated boards.
Using glass or stone boards — They blunt knife edges within a few uses and are slippery to work on.

Questions people ask

Is wood or plastic better for a chopping board?

Both are safe when properly cleaned. Wood is kinder to knives and has some natural antibacterial properties; plastic can be dishwashed, which makes it the practical choice for raw meat.

When should I replace a chopping board?

When the surface is deeply scored enough that cuts trap food and resist cleaning. That applies equally to wood and plastic, and a badly scored board cannot be made hygienic.