Thank Me Later — Because Once You Know This, You Will Use It Every Week
Most secrets in the kitchen are hiding in plain sight. Not in expensive ingredients or complicated techniques — but in the combination of two ordinary things that nobody ever thought to put together.
Bay leaf. Cornstarch.
One sits in the spice rack, pulled out occasionally to flavour a pot of soup and then fished out and discarded at the end. The other lives in the back of the pantry, used occasionally for thickening a sauce and forgotten the rest of the time.
Neither of them, alone, seems particularly extraordinary.
But together — mixed in a specific way, used in a specific form — they create something that the kitchen has needed for a very long time. Something that cleans, protects, soothes, repels, and preserves in ways that most people have been spending money at the shop to achieve without ever knowing the answer was already in the cupboard.
This is the secret nobody ever tells you. And once you try it, you will understand immediately why the gratitude comes later.
What Each Ingredient Is Actually Capable Of
Before the combination makes sense, it helps to understand what each ingredient is doing on its own — because the reason this mixture works so extraordinarily well is that each one brings something completely different to the partnership.
Bay leaf — eucalyptol, tannins and natural protection
Bay leaves are more than flavouring. They contain eucalyptol — the same compound found in eucalyptus oil — in concentrations high enough to have a powerful antibacterial, antifungal, and insect-repelling effect. They contain tannins — natural astringent compounds that tighten, preserve, and protect whatever they come into contact with. And they contain linalool and other volatile compounds that have a documented calming effect on the nervous system and a remarkable ability to repel the insects — moths, weevils, cockroaches, ants — that invade kitchen cupboards and stored food.
When bay leaves are dried and ground to a fine powder, all of these compounds are concentrated and made available in a form that can be mixed, applied, and used far more versatilely than a whole leaf sitting in a pot of stew.
Cornstarch — the carrier that makes everything work
Cornstarch is one of the most useful natural powders in the kitchen. Its molecular structure — fine, smooth, absorbent, and chemically neutral — makes it an ideal carrier for other active compounds. It absorbs moisture, oils, and volatile compounds, holding them stable and releasing them slowly over time. It is gentle enough to use on skin, on fabric, on wood, and on food surfaces without causing any damage. And it creates a smooth, spreadable, adhering base that allows the active compounds of whatever it is mixed with to make direct and sustained contact with whatever surface they are applied to.
Mixed with ground bay leaf powder, cornstarch does not dilute the bay leaf — it amplifies it, making it stable, spreadable, and effective in a way that the loose powder alone never achieves.
The Mixture — How to Make It
Your ingredient list
- 10 to 15 dried bay leaves — the more the better, as the potency of the finished powder depends entirely on the concentration of the bay leaf relative to the cornstarch
- 3 tablespoons of cornstarch — plain, unflavoured, standard cooking cornstarch
- A small glass jar with a lid for storage
- A blender, spice grinder, or mortar and pestle for grinding the leaves
How to make it
Step 1 — Ensure the bay leaves are completely dry. Fresh bay leaves contain moisture that will prevent a fine powder from forming and will cause the mixture to clump. Dried bay leaves from the spice rack are ideal. If using fresh leaves, lay them flat in a warm, dry spot for two to three days before using.
Step 2 — Place the dried bay leaves into a blender or spice grinder and grind until a very fine, pale green powder forms. Stop occasionally to shake the grinder and ensure all the leaf material is being caught by the blades. The finer the powder, the better the mixture will work — coarse leaf fragments will not blend evenly with the cornstarch or adhere to surfaces properly.
Step 3 — Pass the ground powder through a fine sieve to remove any remaining coarse fragments. What passes through should be a smooth, uniformly fine powder — slightly fragrant, pale green-grey, and dry.
Step 4 — Combine the bay leaf powder with the cornstarch in the clean glass jar. The ratio is roughly one part bay leaf powder to three parts cornstarch — though for applications that need maximum potency, the bay leaf proportion can be increased.
Step 5 — Seal the jar and shake well until the two powders are completely and evenly combined. The finished mixture should be uniform in colour — pale green-grey throughout, with no streaks or patches of white cornstarch.
Store with the lid sealed in a cool, dry place. The mixture keeps for up to six months without losing potency.
What to Do With It — Use by Use
Keep insects out of the kitchen and pantry forever
This is the use that will make the most people stop and reach for the jar the moment they know about it.
Bay leaf’s eucalyptol and linalool are intensely repellent to the insects that invade kitchen cupboards — weevils in flour and grains, moths in dried goods, ants along the base of the walls, cockroaches in the dark corners behind appliances. Commercial insect repellents work by similar mechanisms — they simply come in a spray can with a synthetic version of the same compounds.
The bay leaf and cornstarch mixture, sprinkled lightly in the corners of kitchen cupboards, along the back edges of shelves, in the gaps where drawers meet their frames, and along the base of the walls, creates a barrier that insects will not cross and a storage environment they will not enter.
The cornstarch holds the eucalyptol from the bay leaf in place — releasing it slowly and continuously rather than evaporating quickly the way a loose leaf or essential oil would. A single application lasts for four to six weeks before needing to be refreshed.
Sprinkle a thin line along the threshold of any door where ants have been entering. They will not cross it. Scatter a small amount in the corners of a pantry shelf where weevils have appeared. They will not return. Place a teaspoon in each corner of a wardrobe or linen cupboard. Moths will find somewhere else to be.
Soothe skin irritation, rashes and insect bites
The tannins in bay leaf are powerful natural astringents — they tighten inflamed tissue, reduce redness, and calm the histamine response that causes itching. Combined with the smooth, moisture-absorbing quality of the cornstarch, this mixture becomes one of the most effective natural remedies for the everyday skin irritations that most people reach for a pharmacy cream to address.
For insect bites — the kind that swell and itch persistently — dampen the affected area slightly and press a small amount of the mixture directly onto the bite. Leave it to dry and absorb. The cornstarch soothes the surface. The tannins reduce the swelling and calm the itch. Most people feel the difference within fifteen minutes.
For heat rash, minor skin irritation, chafing, and the kind of generalised skin discomfort that arrives in warm weather — dust the affected area with the mixture the way you would use talcum powder. The cornstarch absorbs moisture and reduces friction. The bay leaf compounds calm the inflammation and protect against the bacterial and fungal overgrowth that makes heat rash worse.
For baby rash and nappy rash — use the cornstarch alone without the bay leaf for the most delicate skin, or with a very small proportion of bay leaf for slightly older children. Always test on a small patch of skin first.
Keep stored flour, rice and grains pest-free
Weevils in flour are one of the most common and most frustrating kitchen problems — and one of the least discussed. They arrive invisibly, already present as eggs in the grain before it ever reaches the shop, and hatch in the warmth of the pantry into the tiny beetles that ruin an entire bag of flour or rice without warning.
Add one teaspoon of the bay leaf and cornstarch mixture to each container of stored flour, rice, oats, or other grain. Stir it through gently. The eucalyptol from the bay leaf will prevent any eggs from hatching and will repel any adult insects that might otherwise enter the container. The cornstarch is food-safe and in the quantities used will not affect the cooking properties of the grain.
This is one of the oldest food preservation tricks in traditional kitchens across Europe and Asia — bay leaves have been stored with grain for as long as people have stored grain. The cornstarch simply makes the delivery more consistent and more even.
Freshen and deodorise shoes, bags and small spaces
The natural antibacterial compounds in bay leaf eliminate the bacteria that cause odour rather than masking the smell with a fragrance. Combined with the moisture-absorbing properties of cornstarch — which removes the damp conditions that bacteria need to thrive — the mixture works on shoe odour at its actual source.
Sprinkle one to two teaspoons of the mixture into each shoe at the end of the day. Leave overnight. Shake out in the morning. The odour that returns the following evening will be noticeably less than before — and with consistent nightly use, it resolves almost entirely within the first two weeks.
The same method works for gym bags, storage containers, and any small enclosed space where stale odours accumulate.
A dry shampoo that actually works
Cornstarch has long been used as a natural dry shampoo — absorbing excess oil from the roots and giving hair a fresher appearance between washes. The bay leaf addition makes this significantly more effective.
The eucalyptol and tannins in the bay leaf stimulate the scalp, reduce the scalp bacteria that contribute to greasiness and odour, and leave a clean, subtle fragrance that is completely natural. The cornstarch absorbs the oil. The bay leaf addresses the biology underneath.
Apply to the roots on the day between washes — a small amount pressed into the scalp, worked through with the fingertips, and brushed through. For very dark hair, a small amount of cocoa powder mixed into the cornstarch base produces a shade that does not show as white against dark roots.
Protect wooden surfaces and furniture naturally
The tannins in bay leaf have a long history of use as a natural wood preservative — they protect the wood fibres against moisture penetration, against the fungi that cause wood rot, and against the surface damage that comes from regular use.
Mixed with cornstarch, ground bay leaf can be rubbed into wooden chopping boards, wooden utensils, and unfinished wood surfaces as a natural treatment that protects the wood, reduces bacteria on the surface, and leaves behind a faint, clean fragrance that is far more pleasant than the chemical smell of commercial wood treatments.
Apply a small amount to a clean cloth and rub into the wood surface in the direction of the grain. Leave for ten minutes, then buff off with a clean dry cloth.
What to Expect
For insect deterrence — results are immediate. The compounds are present and active from the moment the mixture is in place. Insects that cross the treated area will not linger.
For skin applications — relief from itching and irritation within fifteen to thirty minutes of the first application. Continued improvement with regular use.
For shoes and odour — noticeable improvement within the first two to three days of nightly use. Near-complete resolution within two weeks.
For stored grains — protection begins immediately and is maintained for as long as the mixture remains present. Replace every six to eight weeks when refreshing the pantry.
One Last Thought
Bay leaf. Cornstarch. Two things that have been in most kitchens for as long as most people can remember.
Separately, each one does something useful but unremarkable. Together — ground, combined, stored in a little jar — they become one of the most versatile natural remedies a kitchen can produce. For the pantry, the skin, the shoes, the hair, the wood, the insects that should not be there.
The jar takes fifteen minutes to make. It costs almost nothing. And it earns its place on the shelf every single week.
Make it once. Use it everywhere.
And come back and say thank you later.
