If you love cooking, you probably chop a lot of onions. They are the base of so many great dishes, but they do leave one unwelcome guest behind: that stubborn onion smell on your chopping board.
Acacia is a beautiful, dense hardwood that makes a brilliant chopping surface, but even the best boards can hold on to strong aromas. The good news? You don’t need harsh chemicals to fix it. Here’s exactly how to remove onion smells from acacia chopping boards naturally, using simple ingredients you already have at home.
Why Acacia Holds Onto Onion Smells
Acacia is naturally water resistant and less porous than many cheaper woods, which is one reason we use it in our acacia chopping board sets. But onion contains sulphur compounds that are wonderfully tasty in a pan and slightly less wonderful when they soak into your board.
If the board is not properly cleaned, dried and oiled, tiny bits of onion and their juices can sit in the surface grain. Over time, that creates lingering smells and makes it harder to switch from onions to fruit or cheese without a hint of yesterday’s curry.
Before You Start: What Not To Do
Before we get into how to remove onion smells from acacia chopping boards naturally, a quick word on what to avoid:
- Don’t soak your board in the sink. Prolonged soaking can warp or crack the wood.
- Don’t put it in the dishwasher. Heat, steam and detergent are the fastest way to ruin a wooden board.
- Don’t use bleach or harsh chemicals. They can dry out the wood and leave their own smell behind.
- Don’t scrub with steel wool or anything too aggressive. You will scratch the surface and open up more places for odours to hide.
We are going to stick to gentle, natural methods that respect the wood and still get rid of that onion pong.
Step 1: Wash Properly Straight After Chopping
It sounds simple, but timing matters. The longer onion juices sit on the surface, the more they soak in.
- Rinse the board under warm running water as soon as you are done chopping.
- Use a soft sponge or cloth with a little mild washing up liquid.
- Scrub in the direction of the grain to lift residue out rather than pushing it in.
- Rinse thoroughly so no soap is left behind.
Pat the board dry with a clean tea towel, then stand it upright so air can circulate around both sides. If you stop here, some onion smells may still linger, but you have already made the next steps much more effective.
Step 2: Neutralise Odours with Salt and Lemon
This is the classic cook’s trick and it works brilliantly on acacia. You get gentle abrasion from the salt and natural deodorising from the lemon.
You will need:
- Coarse salt such as sea salt or kosher salt
- Half a fresh lemon
How to do it:
- Sprinkle a generous layer of coarse salt over the onion side of the board.
- Take your half lemon and use the cut side as a scrubber, working it over the salted surface.
- Scrub for 1 to 2 minutes, pressing the lemon so it releases juice and forms a paste with the salt.
- Leave that paste on the board for 5 to 10 minutes to let the citric acid do its work.
- Rinse thoroughly with warm water and dry as before.
The board will smell fresh and lightly citrusy, rather than like last night’s bolognese prep.
Step 3: Use Bicarbonate of Soda for Stubborn Smells
If you chop onions every day or your board has been neglected for a while, you might need something a bit stronger, but still natural. Bicarbonate of soda is brilliant at absorbing odours without being harsh on the wood.
You will need:
- Bicarbonate of soda
- A little water or lemon juice
How to do it:
- Sprinkle a thin, even layer of bicarbonate of soda over the surface.
- Drizzle a few drops of water or lemon juice to form a spreadable paste.
- Spread it with your fingers or a soft cloth and leave for 15 to 20 minutes.
- Gently scrub with a soft brush or sponge if needed.
- Rinse very thoroughly and dry upright.
This method is especially helpful if you use your board for garlic, onions and strong cheeses and want to reset it completely.
Step 4: Finish with Oil to Seal In Freshness
Once you have removed onion smells from your acacia chopping board naturally, you want to keep it that way. That is where oiling comes in. A well oiled board is less likely to absorb strong smells in the first place.
Use a food safe mineral oil or a specialist board oil. Avoid olive oil or other cooking oils, as they can go rancid over time.
How to oil your acacia board:
- Make sure the board is completely dry.
- Apply a small puddle of oil to the surface.
- Use a soft cloth or paper towel to work the oil into the grain, including the edges.
- Let it soak in for at least 20 minutes, or overnight if the wood looks thirsty.
- Wipe off any excess with a clean cloth.
Regular oiling is part of why our boards, like the premium butcher's block, arrive pre oiled and ready to use. At home, a light oil once a month or so is usually enough, more often if the board looks dry.
Quick Natural Fixes When You Are In A Rush
If you have friends arriving in ten minutes and your board still smells like onions, here are a few fast tricks:
- Vinegar wipe Mix equal parts white vinegar and water, wipe the board, then rinse and dry. Vinegar helps cut through smells quickly.
- Dry salt scrub Sprinkle coarse salt, scrub with a damp cloth, then wipe off. Not as thorough as the lemon method, but better than nothing.
- Air and sunlight Pop the board near a sunny window for an hour or two. Gentle sunlight and fresh air can help lift odours. Avoid leaving it in full blazing sun all day, as that can dry the wood too much.
How To Stop Onion Smells Building Up
Prevention is always easier than rescue. A few simple habits will keep your acacia board smelling fresh for longer:
- Rinse straight away after chopping onions or garlic.
- Keep one side for savoury and the other for fruit or bread. Our double sided boards, like the ones in our wooden chopping board collection, make this easy.
- Give it a salt and lemon scrub once a week if you cook a lot.
- Oil regularly so the surface stays nicely sealed.
Some people also like to keep a dedicated onion and garlic board and a separate one for pastries, cheese and fruit. If you have space, a small set of boards, such as our bamboo chopping board set, works well for that.
Why Natural Cleaning Is Better For Your Board
Using natural methods to remove onion smells from acacia chopping boards is not just about being eco friendly. It is also about protecting the wood so it lasts for years.
- Salt and lemon clean without stripping the wood.
- Bicarbonate of soda absorbs odours rather than just masking them.
- Food safe oils nourish the grain and help prevent cracking.
Acacia is an investment piece in your kitchen. With the right care, it will outlast a drawer full of plastic boards and look far better doing it.
Bringing It All Together
So, how to remove onion smells from acacia chopping boards naturally? Rinse quickly, scrub with salt and lemon, call in bicarbonate of soda for stubborn odours, and keep the wood well oiled. Add in a few good habits and you will have a board that smells as good as it looks.
If you are thinking about upgrading your chopping setup, have a look at our acacia and bamboo ranges, including our best selling chopping boards. Whether you go for a compact board or a full butcher’s block, treat it well and it will reward you every time you cook.