How to look after a wooden chopping board

The short answer: wash a wooden chopping board by hand in warm soapy water, dry it straight away, and stand it on its edge so both faces get air. When the surface starts to look pale and dry, give it food-safe board oil — never olive oil — and keep it out of the dishwasher, out of standing water and away from radiators. That's the whole routine. Everything else in this article is the why, and the rescues.

What's actually happening to your board

It helps to know one thing about wood: it never stops breathing. Timber takes in moisture and lets it go with every wash, every steamy kitchen, every dry January radiator — and as the moisture moves, the wood moves with it, a little. I've written more about that in the end-grain guide; for care, you only need the practical consequence.

A board that takes in water evenly and dries evenly simply flexes a little and settles back. It can do that for fifty years. What a board cannot forgive is unevenness — and that is nearly always water sitting on one side. The wet face swells while the dry face doesn't; the two faces pull against each other; and that argument is your cupping, and in time, your cracks.

The thing that kills boards is water sitting on one side. Almost every rule in this article is that one sentence, wearing different clothes.

The five-minute routine

Washing. Warm water, a drop of washing-up liquid, a soft cloth or sponge. Wash promptly after use — especially after raw meat — rinse, and dry immediately with a tea towel. That's it. No soaking, no dishwasher, and no bleach: hot soapy water does the job, which is also what UK food-safety guidance asks of any board.

Drying. After the tea towel, stand the board on its edge — leaning against the wall or on a rack — so air reaches both faces equally. This is the single habit that matters most, and it costs two seconds. A board laid flat on a damp draining rack is drinking through one face all night. Now you know why that matters.

Storing. Same logic, standing still: keep the board on its edge or upright in a rack, with air on both sides — not laid flat in a puddle-prone corner, not flat against a damp tile wall, and not next to the hob or under a sunny window, where one face slowly toasts. A dry cupboard is fine; near the kettle's steam is not.

Oiling. When the surface starts to look pale, dry and thirsty — rather than by any calendar — give it oil. Which brings us to the only part people overthink.

Oiling, briefly: when, what, and what never

When? Let the board tell you. Under regular use that's often somewhere around monthly at first, then less as the wood fills; an occasional-use board may want oil only a few times a year. Pale and dry-looking means yes. Dark and slightly satin means not yet.

What with? A food-safe board oil or plain food-grade mineral oil from the chemist. My own boards leave the workshop finished with Walrus Oil products — the care guide lists exactly what's in them, including the allergy notes — so a new board arrives fed and ready; your first job is dinner, not maintenance.

What never? Olive, sunflower, vegetable — any cooking oil. They don't cure; they sit in the wood and slowly go rancid, and a rancid board is a smell you will not forget. This is the most common well-meant mistake in board care, usually made with the best oil in the kitchen.

How? Clean, dry board; pour the oil on generously; work it into both faces and all the edges with a cloth; leave it overnight to drink; wipe off whatever's left in the morning. Ten minutes of effort, most of it waiting.

That's as deep as oiling needs to go for a healthy board. There's a longer story in oils — mineral against tung, waxes and board butters, why some makers blend their own — and it's coming to this journal as a guide of its own.

The things that genuinely ruin boards

In the workshop I see the same few causes of death again and again, so let me name them properly. Each one is the water rule in disguise.

The dishwasher. The board-killer. An hour of hot water, steam and aggressive detergent forces moisture deep into the timber and then bakes it out — the most uneven wetting-and-drying a board can experience. One cycle can split a board that would have lived for decades. There is no wooden board this is safe for, including mine.

Soaking. Ten minutes standing in the washing-up bowl is ten minutes of one-sided drinking. Wash it, rinse it, dry it, stand it up.

Fierce drying. The radiator, the oven top, direct summer sun on the windowsill. Fast, uneven drying is how cracks start; wood likes to dry the way it likes to live — evenly and without drama.

Bleach and harsh cleaners. They strip the finish, dry the surface and can leave residues where food goes. Hot soapy water for every day; for stains and smells, a cut lemon and coarse salt scrubbed over the surface does more than you'd expect. (The care guide keeps the quick recipes.)

The wrong oil. See above. Olive oil is for the pan.

And mould? Rare, and almost always a symptom of the habits above — a board living wet in a dim corner. Caught early, on the surface: wash and dry it fully, give it a light sanding, oil it well, and fix the drying habit that caused it. If dark staining sits deep in the wood or keeps returning, the board needs more than a wipe — that's a job for a proper restoration.

Bringing a tired board back

A board that's gone grey, rough and thirsty is not finished — this is wood's quiet superpower, and it's the reason a good board is a decades purchase rather than a yearly one.

For home revival: a light sanding with fine paper (240-grit is right), wipe away the dust, then oil generously — several coats over a few days, letting each soak in. The surface comes back darker, smoother and fed, and honestly it's a satisfying afternoon.

Know the limits of the kitchen table, though. Deep knife valleys, a real warp, a crack you can catch a fingernail in, a smell that survives the lemon — those need machines and workshop time. My Board Refresh service takes boards in that state — mine or any maker's — and returns them flattened, re-sanded and re-oiled, ready for their next decade. Somewhere between "tired" and "furniture for the fire" there's a lot of board worth saving.

The hygiene question, quickly

People sometimes treat wooden boards as the risky choice. The evidence points the other way — bacteria drawn into wood are stranded and die there, which is why food-science reviews take wood seriously as a food-contact surface. I've covered the research properly in the end-grain guide's hygiene section and the wood-plastic-glass comparison, so this article only needs the practical half: wash promptly after raw meat, keep raw and ready-to-eat work separate, dry the board standing, and keep the surface smooth — on any material, it's deep scarring that makes cleaning hard. A cared-for wooden board is not the compromise choice. It's the durable one.

That's genuinely the whole of it

Wash it by hand and dry it standing. Oil it when it looks thirsty. Keep it out of standing water, away from fierce heat, and never in the dishwasher. Five habits, five minutes, five decades — the arithmetic of wooden boards is very much in your favour.

None of this is fussing, either. A wooden board doesn't ask you to baby it; it asks you not to drown it. In return it wears in rather than wearing out, looks better at ten years than at ten days, and can be brought back to nearly new when it's earned a rest — which is rather the point of buying a real one in the first place.

If your board is past what a kitchen can fix, the workshop can help. And if you're choosing your first wooden board, the end-grain guide explains what to look for — whoever you buy from.

— Ewald
Timbermere Studio