Never boil wooden spoons: Expert warns against common kitchen mistake

In many households, wooden spoons, spatulas and breakfast boards are routinely plunged into boiling water to get them “properly clean”. A kitchen specialist recently challenged that habit on a TV morning programme, explaining why boiling wood (often with washing-up liquid or vinegar) can quietly damage the material - and what a far better, simple care routine looks like.

Wooden utensils: why boiling wooden spoons and chopping boards is a bad idea

Wood is often seen as tough, natural and able to cope with anything. When hygiene is the priority, people frequently reach for the most aggressive option they can think of: boiling wooden utensils for several minutes in vigorously bubbling water (around 100°C), sometimes with added detergent or vinegar.

A specialist featured on television strongly advises against it. The problem is that boiling triggers changes inside the wood that you can’t immediately see - and the damage tends to appear gradually over time.

When you boil wood, natural substances leach out, the material absorbs water, swells and permanently loses strength.

He explains that heat draws out the wood’s tannins into the water. You may notice the water turning brownish, but the more important effect is what happens to the wood itself: the pores open up, moisture is driven deep into the fibres, and the utensil can feel softer or slightly spongy afterwards - making it more prone to cracking.

With chopping boards and spatulas in particular, which already face repeated temperature changes in everyday cooking, boiling accelerates wear and ageing. Ironically, the attempt to improve hygiene can lead to more splits and tiny hollows - exactly the kind of places germs prefer to settle.

What repeated soaking does to hygiene

Damp, swollen wood takes longer to dry. If moisture remains trapped inside, it creates ideal conditions for bacteria and mould spores. From the outside, the board can begin to look patchy and tired; in some cases it develops a stale, musty smell.

After boiling, the wet wood is often left on the worktop or quickly put away in a cupboard. That reduces airflow and slows drying even further. So while it feels like you’ve just “disinfected” everything, you may actually be creating the next hygiene issue.

• More hairline cracks and grooves on the surface
  
• Longer drying times, often with residual moisture inside
  
• Micro-cracks that trap food particles and germs
  
• Higher risk of odours and discolouration
  

For this reason, the specialist is clear: wooden spoons and boards do not belong in a boiling pan - and they also do not belong in the dishwasher, where hot water, harsh detergents and big temperature swings can be just as damaging.

The smarter alternative: gentle cleaning, fine sandpaper, a little oil

Rather than relying on brute-force heat, the expert recommends a straightforward, much gentler routine. It comes down to three steps and can be done with basic household items.

Step 1: Daily cleaning with a mild product

For day-to-day use, warm (not hot) water and a mild washing-up liquid are enough. If you prefer, you can use a plain, traditional pure soap. A sponge or soft brush will lift fresh food residue effectively.

If you’re dealing with lingering smells or something greasy, a small splash of household vinegar can help: it cuts through fat and has a mild disinfecting effect. The key is to rinse thoroughly afterwards so no soap or vinegar residue remains.

Step 2: Deep refresh with fine sandpaper

At intervals - depending on use, roughly every few weeks or every few months - the expert suggests a “mini restoration”. Use fine sandpaper, for example 180 grit.

A quick sand with fine paper removes the worn top layer - the wood feels smooth and hygienic again.

Always sand with the grain. A few light passes are usually enough to remove stains, grey patches or slightly rough areas. Then wipe away the sanding dust carefully with a dry cloth.

Step 3: Protect with cooking oil

To finish, the spoon or board gets a simple protective layer. Choose a neutral, low-odour cooking oil that’s food-safe, such as:

• refined sunflower oil
  
• grapeseed oil
  
• a dedicated food-grade wood care oil for kitchen utensils
  

Put a few drops on a soft cloth and rub in a thin layer until the surface has an even, light sheen. After a few minutes, wipe off any excess with a clean cloth so it doesn’t turn sticky. Oil conditions the fibres, improves resistance to moisture and leaves the wood feeling smoother.

A couple of extra points that make wooden utensils last longer

Not all wood behaves the same way. Denser hardwoods are generally more stable and less prone to deep knife marks than softer woods, which helps hygiene because there are fewer grooves for residue to collect. If you’re buying a new chopping board, look for solid construction and a finish intended for food contact.

It also helps to think about drying as part of cleaning. After washing, stand boards upright or lean them so air can circulate on both sides. Drying flat on a damp worktop can encourage warping and slow the process - particularly after heavy rinsing.

Why wooden utensils still have a clear advantage, even with the extra care

A growing number of experts now consider wood a better choice than plastic for many kitchen tools. One reason is increasing concern about plasticisers and other chemicals that may migrate from plastic when it’s heated.

A well-known doctor recently issued a strong warning about everyday plastic spoons and spatulas. In his view, certain substances associated with plastics are suspected of affecting the hormonal system. Concerns he highlighted include:

• increased risk of genital malformations in boys
  
• possible links to earlier puberty in girls
  
• associations with hormone-related cancers such as breast or prostate cancer
  

His message is blunt: plastic should be removed from the kitchen as far as possible, especially wherever it is heated strongly - for example in frying pans, saucepans or the microwave.

Properly maintained wooden utensils are gentle on non-stick pans, free of plasticisers and, with correct use, extremely long-lasting.

Wood also protects cookware surfaces: it won’t scratch non-stick coatings, and it feels warmer and more comfortable to use while cooking. If sustainability matters to you, products from certified forestry can be a stronger choice than many plastic tools.

Practical everyday tips for wooden spoons, spatulas and boards

A quick checklist helps keep wood looking good and staying hygienic:

• Rinse straight after use with warm water so food doesn’t dry on.
  
• Clean with mild washing-up liquid and a brush; don’t soak for hours.
  
• Never put wood in the dishwasher - heat and detergents attack the fibres.
  
• Dry upright or propped up so air can circulate around it.
  
• If it discolours or feels rough, use fine sandpaper to refresh the surface.
  
• Re-oil lightly at regular intervals.
  

If a board is badly damaged or deeply cracked, don’t keep using it indefinitely. Deep splits are difficult to clean properly, and replacement is the sensible option. For most homes, a small wooden set is enough: a stirring spoon, a spatula, a chopping board for vegetables and another board for bread.

Common myths about wood in the kitchen

Wood is still sometimes labelled a “germ magnet”, especially compared with glass or stainless steel. Interestingly, various studies indicate that with correct care, wood isn’t automatically less hygienic - and some wood species even have natural antimicrobial properties.

Another misconception is: “If the board is really wet, the dirt will come off more easily.” In reality, constant dampness encourages mould and odours. Short, thorough cleaning followed by proper drying works far better. Even the old trick of placing kitchen roll under a wet board only helps a little: it absorbs moisture, but it also restricts airflow.

If you follow the simple care basics and skip boiling, you can use wooden utensils safely for many years. Switching from plastic to wood becomes more than a style choice - it’s a practical step towards safer cooking without making everyday kitchen life any more complicated.