A wood cutting board is finished with an oil that soaks in, a wax that stays near the top, or both. The three you'll see most are food-grade mineral oil, beeswax and fractionated coconut oil, and all three do the job.
Where they differ is what they're made from and how often you put them back. Mineral oil is refined from petroleum. Beeswax comes from honeycomb, and the coconut oil is a plant oil.
The board we sell is finished with coconut oil, so read this knowing that. We haven't tested any finish ourselves. Every fact here is a maker's own statement, a federal rule or a university extension bulletin, linked at the end.
Why does the finish on a cutting board matter?
In short. Bare wood drinks water, and a finish slows that down. It's also the one part of a board you keep replacing.
Wash a new board a dozen times and the middle starts to look pale and thirsty. That's the finish wearing out, which is what it's supposed to do.
Wood swells when it's wet and shrinks as it dries. John Boos, the butcher block maker, describes its board cream as a barrier against food and liquids, and tells owners that a dry look means it's time to oil.
So the maker picks the first coat, and you pick every coat after that. It helps to know what's in the bottle.
What are the finishes, at a glance?
In short. Two oils that stay liquid, one wax, blends of those, and plant oils that harden in the wood.
| Finish | What it is | What it does | How often, per a maker | Watch for |
|---|---|---|---|---|
| Food-grade mineral oil | A clear oil refined from petroleum | Soaks into the wood and stays liquid | At least once a month (John Boos) | It washes out, so it goes back on. It comes from petroleum, which some buyers would rather skip |
| Beeswax | Wax from honeycomb | Stays near the surface and sheds water | With the oil, or right after it | Every beeswax product we read blends it with an oil. It comes from bees |
| Fractionated coconut oil | Coconut oil with the fats that turn solid taken out | Soaks in and stays liquid, like mineral oil | After each use, or at least twice a month (Virginia Boys Kitchens) | Its maker's schedule is more frequent than the monthly one for mineral oil |
| Board cream, wax or conditioner | An oil and a wax in one tin | The oil soaks in and the wax seals the top | About monthly, after oiling | The oil inside can be mineral, coconut or both. Read the ingredients line |
| Drying oils: tung, hemp seed | Plant oils that harden when they meet air | Cure in the wood and stay put | Seasonally at minimum (STEELPORT's hemp conditioner) | Time. Pure tung oil can take up to 30 days to cure fully |
| Cooking oil from the pantry | Olive, vegetable and the like | Soaks in at first | Makers say to skip it | It can turn sticky and rancid, per the University of Maine's extension bulletin |
What is food-grade mineral oil?
In short. A clear oil refined from petroleum. It's the finish John Boos names in its warranty care, and the one the University of Maine's extension bulletin suggests.
The FDA has a rule for it. The rule describes white mineral oil as a mixture of liquid hydrocarbons obtained from petroleum, refined to pass set purity tests, and it lists the uses and amounts the agency allows in food. A second rule covers mineral oil in things that touch food.
On a board it soaks into the grain and stays liquid. That's why it has to go back on. John Boos says to oil at least once a month, more if you wash the board a lot, and to let the oil sit overnight before wiping off what's left.
Good at. Howard Products describes the mineral oil in its conditioner as tasteless and odorless, and says it won't go rancid. John Boos tells owners its own oil or a food-grade mineral oil is required to keep the warranty.
Watch for. It doesn't harden, so washing carries it away a little at a time. And it's a petroleum product. The FDA's rules allow it in and around food within limits, and plenty of board makers use it, so whether that matters is your call.
Makers who use it say so plainly. Montana Block lists its Camp Board and Big Game Board as "Seasoned with two coats of beeswax/mineral oil."
What does the research say about mineral oil?
In short. The research covers mineral oil that ends up in food from packaging, machinery and less refined oils. Nobody has studied cutting boards. It's worth knowing, and it's narrower than the headlines make it sound.
Mineral oil is a family of petroleum hydrocarbons, and how far it's refined changes what's in it. Food-grade white mineral oil, the kind sold for boards, sits at the heavily refined end.
The cancer rating. The International Agency for Research on Cancer (IARC) classes untreated or mildly treated mineral oils as carcinogenic to humans. That rests mainly on workers exposed through the skin for years, in jobs like metalworking. IARC found highly refined oils not classifiable.
A rating like this names a hazard. It doesn't measure the risk at everyday exposure, and it says nothing direct about food-grade oil on a board.
Mineral oil in the diet. In 2023 the European Food Safety Authority (EFSA) updated its review of mineral oil that reaches food, mostly from packaging, machinery lubricants and processing. It split the oil in two.
The saturated part builds up in human liver, spleen and fat. EFSA concluded today's dietary amounts of it don't raise concern, and noted the margin is limited.
For the aromatic part, it said compounds with three or more rings may damage DNA and cause cancer, so a concern can't be ruled out. That review rests on food testing, rat studies and human tissue samples. It's moderate evidence about the diet, and it measured nothing from a cutting board.
Swallowed on purpose. Heart trials have used pharmaceutical-grade mineral oil as a placebo. In one large trial, the group taking 4 grams a day saw LDL cholesterol and a marker of inflammation rise.
EFSA called that evidence observational and the hazard uncertain. It's limited evidence, from a daily dose swallowed on purpose.
What nobody has measured. We found no study of how much mineral oil moves from an oiled board into food. So we can't tell you a board finished with it adds anything meaningful to what you eat, and we won't.
Why it can still matter to you. Most of the mineral oil in a diet arrives in ways you don't pick, through packaging and processing. A board finish is one of the few places where you choose the oil yourself. If you'd rather not add a petroleum oil you don't need, coconut oil, beeswax and drying oils do the same job.
What does beeswax do on a board?
In short. It stays near the surface and helps the wood shed water. Makers nearly always blend it with an oil.
The FDA's rule on beeswax describes how it's made: honeycomb is melted and strained after the honey comes out. The rule lists surface finishing among its uses in food.
John Boos ships its boards with a cream finish that has beeswax in it. Its care page calls the cream a thicker formula that leaves a wax barrier on top, applied after the oil.
Good at. Keeping water on top of the wood for a while. John Boos says its cream helps keep the water out and the oil in.
Watch for. It's a top layer on a surface you cut and scrub, so it wears and goes back on with the oil. That's our read of the makers' schedules. It also comes from bees, which matters if you avoid animal products.
What is fractionated coconut oil?
In short. Coconut oil with the fats that go solid taken out, so it stays a clear liquid. It soaks into wood the way mineral oil does.
Fractionating means separating an oil's fats by melting point. The ones that firm up when cool, lauric acid among them, are removed, and what's left stays liquid.
The jar of coconut oil in your pantry is a different thing. It's a cooking oil, and John Boos says to keep every kind of cooking oil off a wood board.
Virginia Boys Kitchens makes a board oil from it. Its page lists clear, odorless, food-grade fractionated coconut oil with a little orange and rosemary extract.
Good at. It's a plant oil with no petroleum in it, which is the reason some buyers look for it. It goes on the same way: wipe on, let it soak, wipe off.
Watch for. Virginia Boys says to re-oil after each use or at least twice a month, which is more often than the monthly rhythm for mineral oil. Its oil is lightly scented. And we haven't found an independent test of how long either oil lasts in a board.
What about board cream, wax and conditioner?
In short. They're an oil and a wax in one tin, and the ingredients line tells you which oil.
The names don't tell you much. Four tins, four recipes:
- Howard Butcher Block Conditioner. Food-grade mineral oil, beeswax and carnauba wax.
- Walrus Oil Cutting Board Oil. Beeswax, fractionated coconut oil, mineral oil and vitamin E.
- Virginia Boys Kitchens Wood Wax. Coconut oil and beeswax, with a few drops of orange essential oil.
- Boos Block Board Cream. Unbleached beeswax and a food-grade oil. The care page doesn't name the oil.
So a product with coconut on the front can hold mineral oil too, and the reverse. If you care which oil goes on your board, the ingredients line is the place to look.
What are drying oils, like tung and hemp seed?
In short. Plant oils that harden in the wood when they meet air. They go longer between coats and take longer to be ready.
STEELPORT, the Portland maker whose knives we carry, sells a board conditioner made of hemp seed oil and beeswax. It calls hemp seed oil a drying oil that cures into the wood, and says to treat a board when it looks dry or when water stops beading, at minimum once a season. We carry its knives and don't carry the conditioner.
Tung oil is the slow one. Real Milk Paint, which sells it, lists cutting boards among its uses and says to apply three to five coats. It says the surface feels dry in a few days and can take up to 30 days to cure fully.
Linseed oil turns up as well. Tried & True blends it with beeswax for interior woodwork. Its page doesn't mention cutting boards, so we'll leave it there.
Good at. A cured oil stays in the wood instead of washing out, so the schedule stretches from weeks to seasons.
Watch for. The wait. A board oiled with mineral or coconut oil is back in use the next morning. A board finished with pure tung oil needs weeks first.
Which finish is on the board we carry?
In short. Coconut oil. Virginia Boys Kitchens seasons its boards with its own board oil, and that oil has no mineral oil in it.
The maker's product page says every board is "preseasoned with our natural cutting board oil." Its oil page lists the ingredients: fractionated coconut oil with orange and rosemary extract. The same page says the oil contains no mineral oil.
We also asked what holds the maple strips together. The maker told us in writing that the boards are glued with Titebond III wood glue.
That tells you what's on the board when it arrives. We don't rank it above a board finished with mineral oil and beeswax. They're different materials, and you now know which is which.
You can see the board here: Virginia Boys Kitchens Extra Large Maple Cutting Board.
How do you re-oil a cutting board?
In short. Wash it, let it dry all the way, wipe on oil, leave it overnight and wipe off what's left.
- Start with a dry board. Wash with mild soap and warm water, towel it off and stand it on edge until it's fully dry.
- Coat every surface. John Boos says to oil all sides, with a cloth or a paper towel.
- Give it time. Several hours, or overnight, per John Boos and the University of Maine's extension bulletin.
- Wipe off the extra. John Boos adds a warning not to over-oil.
- Wax last, if you use one. The cream or wax goes on after the oil has soaked in.
How do you know it's time? The wood looks dry and lighter in color, or water stops beading on it.
Two things no finish fixes: the dishwasher and a long soak in the sink. John Boos and STEELPORT both say to keep a wood board out of the dishwasher, and STEELPORT adds the soak.
Common questions
Is the mineral oil used on cutting boards made from petroleum?
Yes. The FDA's rule describes white mineral oil as a mixture of liquid hydrocarbons obtained from petroleum and refined to set purity tests. The same rule lists the uses and amounts allowed in food.
Is mineral oil a plastic?
No. Mineral oil and plastic both start from petroleum, but they end up as different things. Mineral oil is a liquid mix of hydrocarbons, refined to pass the purity tests in the FDA's rule. Plastic is a polymer, long chains of molecules built into a solid. If you'd rather keep petroleum products off your board, a coconut oil or beeswax finish does that.
Is food-grade mineral oil the oil IARC rates as a carcinogen?
No. IARC's carcinogen rating covers untreated or mildly treated mineral oils, mostly from years of skin contact at work. It found highly refined oils, the group food-grade white mineral oil belongs to, not classifiable. That isn't proof either way about a board.
What does EFSA say about mineral oil in food?
In its 2023 review, EFSA concluded that the saturated part of mineral oil in today's diet doesn't raise concern, with a limited margin. It said aromatic compounds with three or more rings may damage DNA and cause cancer, so a concern can't be ruled out. The review is about oil from packaging, machinery and processing, not cutting boards.
How often should you oil a cutting board?
About once a month for mineral oil, per John Boos and the University of Maine's extension bulletin. Virginia Boys Kitchens says after each use or at least twice a month for its coconut oil, and STEELPORT says at least once a season for its hemp seed conditioner. Oil sooner if the wood looks dry.
Can you use coconut oil on a cutting board?
Fractionated coconut oil, yes. Virginia Boys Kitchens and Walrus Oil both use it in board oils. The solid coconut oil sold for cooking is a cooking oil, and John Boos says to keep cooking oils off a wood board.
Can you use olive oil on a cutting board?
Makers and extension advice say to skip it. The University of Maine's bulletin says cooking oils such as olive or vegetable oil may become sticky and turn rancid over time.
What is the difference between board oil and board cream?
Board oil is thin and soaks into the wood. Board cream is an oil thickened with wax, and it goes on after the oil to seal the top.
Does beeswax make a cutting board waterproof?
It helps the surface shed water for a while. Makers still say to keep a wood board out of the dishwasher and out of standing water.
Can you use tung oil on a cutting board?
Real Milk Paint, which sells pure tung oil, lists cutting boards among its uses. It says to allow up to 30 days for the oil to cure fully.
What finish is on Virginia Boys Kitchens cutting boards?
The maker says its boards are preseasoned with its own board oil, which its site lists as fractionated coconut oil with orange and rosemary extract. Its oil page says the oil contains no mineral oil.
Read next: Carbon steel kitchen knives: rust, patina and care, for the knife that meets the board, our guide to what the label words on cookware do and don't tell you, and our Materials pages.
Sources
A maker page tells you what the maker states. It isn't independent proof.
- Virginia Boys Kitchens, Extra Large Maple Wood Cutting Board (preseasoned with the maker's board oil). virginiaboyskitchens.com. VERIFIED, maker statement.
- Virginia Boys Kitchens, Coconut Cutting Board Oil (ingredients, no mineral oil, how often to apply). virginiaboyskitchens.com. VERIFIED, maker statement.
- Virginia Boys Kitchens, Wood Wax for Cutting Boards (coconut oil, beeswax, orange essential oil). virginiaboyskitchens.com. VERIFIED, maker statement.
- Virginia Boys Kitchens, written answer to Clearly Made on the glue (Titebond III). VERIFIED, maker's written statement to us. Not a public page.
- Montana Block, The Camp Board and Big Game Board (finish statement). Camp Board and Big Game Board. VERIFIED, maker statement.
- John Boos, Boos Block Care and Maintenance, cutting boards (monthly oiling, overnight soak, board cream, no dishwasher). johnboos.com. VERIFIED, maker statement.
- John Boos, Frequently Asked Questions (cream finish with beeswax from the factory, mineral oil and the warranty, no cooking oil). johnboos.com. VERIFIED, maker statement.
- US Food and Drug Administration, 21 CFR 172.878, White mineral oil. ecfr.gov. VERIFIED, federal rule.
- US Food and Drug Administration, 21 CFR 178.3620, Mineral oil (in articles that touch food). ecfr.gov. VERIFIED, federal rule.
- US Food and Drug Administration, 21 CFR 184.1973, Beeswax (yellow and white). ecfr.gov. VERIFIED, federal rule.
- University of Maine Cooperative Extension, Bulletin #3108, on cutting board materials, use and cleaning (monthly conditioning, cooking oils). No page date shown. extension.umaine.edu. VERIFIED, university extension.
- Howard Products, Butcher Block Conditioner (ingredients, taste, smell and rancidity statements). howardproducts.com. VERIFIED, maker statement.
- Walrus Oil, Cutting Board Oil (ingredients). walrusoil.com. VERIFIED, maker statement.
- STEELPORT Knife Co., Hemp-Based Board Conditioner (ingredients, drying oil) and How to Care for a Wood Cutting Board (when to treat). conditioner and board care. VERIFIED, maker statement.
- Real Milk Paint Co., Pure Tung Oil (uses, coats, cure time). realmilkpaint.com. VERIFIED, maker statement.
- Tried & True, Original Wood Finish (linseed oil and beeswax, interior woodwork). triedandtruewoodfinish.com. VERIFIED, maker statement.
- European Food Safety Authority, CONTAM Panel, Update of the risk assessment of mineral oil hydrocarbons in food, EFSA Journal 2023;21(9):8215 (regulator risk assessment: food testing, animal studies, human tissue data, and the placebo trial evidence). efsa.onlinelibrary.wiley.com. VERIFIED, regulator. Evidence: moderate for the diet, limited for the placebo findings.
- European Commission, Food Safety, contaminants catalogue, Mineral Oil Hydrocarbons (sources in food, summary of the EFSA conclusions). food.ec.europa.eu. VERIFIED, regulator.
- International Agency for Research on Cancer, Mineral Oils, Supplement 7 (untreated and mildly treated oils carcinogenic to humans, highly refined oils not classifiable) and Monograph 100F. inchem.org and ncbi.nlm.nih.gov. VERIFIED, hazard classification. Evidence: strong for the occupational exposures it covers.
- Healthline, What Is Fractionated Coconut Oil Good For? (how fractionation works, which fats are removed). healthline.com. REPORTED, secondary source.
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