Lehsun (Garlic): Raw vs Cooked, Crushing Right and Real Cautions
A crushed clove of lehsun taped to the sole of a foot overnight can leave a raised, weeping blister by morning. That isn’t the garlic “pulling out” a cold. It’s a chemical burn. Raw garlic vs cooked garlic is a real kitchen question, and the answer changes how you chop, how long you wait, and who should be careful with it.
Before you start
- Everyday amount: 1 to 2 cloves a day as food is ordinary in most desi homes
- Best habit: crush or chop, then leave it 10 minutes before heating
- Never: tape or bandage raw garlic on skin, especially a child’s
- Tell your doctor: if you take blood thinners or have surgery coming up
- Storage: whole bulbs, cool, dry, airy; never peeled cloves sitting in oil at room temperature
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What actually happens when you crush a clove
A whole, unbroken clove smells of almost nothing. Cut it and within seconds that sharp, eye-watering smell arrives. The clove keeps two things in separate compartments, a sulphur compound and an enzyme. Breaking the cell walls lets them meet, and the pungent compounds that give garlic its bite form in the minutes that follow.
Heat stops that enzyme working. So if you slice a clove and drop it straight into smoking oil, you get flavour, but far less of the fresh, fierce character than if you had let it sit first. This is why many cooks now crush garlic at the start of prep, before the onions are even peeled.
- Peel 2 cloves. Press each one flat with the side of a heavy knife, then chop fine or pound in a small imam dasta (pestle) with a pinch of salt.
- Scrape it into a small katori and leave it uncovered for 10 minutes. Set a timer, it feels longer than it is.
- Add it to the tarka for the last 30 to 60 seconds only, once onions are golden, on medium heat.
- Watch the colour. Pale gold is right. Brown garlic tastes bitter and acrid, and there’s no rescuing it; start again.
Raw garlic vs cooked garlic: which to choose
Neither is “correct”. They’re different foods. Raw garlic is harsh, hot on the tongue and hard on some stomachs. Cooked garlic turns mellow, sweet and nutty, and slow-roasted whole cloves go soft enough to spread on roti.
| Raw (crushed) | Cooked | |
|---|---|---|
| Taste | Sharp, burning | Mellow, sweet |
| Stomach | Can cause heartburn, gas | Usually gentler |
| Breath | Strong, lasts hours | Milder |
| Typical use | Chutney, raita, dressing | Tarka, salan, yakhni |
A common household habit is swallowing one raw crushed clove with water on an empty stomach. If that sits well with you, fine. If it gives you a burning chest for the next hour, that’s your body being clear with you. Take it with food instead, or cook it. If heartburn is a regular problem, our piece on acidity and the cold milk myth is worth reading before you add more raw garlic to your mornings.
Unani writers class garlic as hot and dry, strongly so, which is why hakeems traditionally paired it with cooling foods such as dahi and advised people with a “hot” temperament to go easy in summer. Ayurveda describes lahsun as heating and sharp, used more in the cold, damp months as part of ritucharya (eating with the season). In ordinary homes it went into winter saag, into yakhni for a cold, and into mustard oil warmed for champi. These are traditions, and our guide to garam and thanda foods explains the logic behind them.
Garlic, blood thinners and surgery
This is the part people skip, and it matters. Garlic in normal cooking amounts is not a worry for most people. But garlic in larger amounts, and especially concentrated garlic capsules or oil, may add to the effect of medicines that slow blood clotting. That includes warfarin, and it’s worth mentioning with aspirin, clopidogrel and the newer anticoagulants too.
Before any operation or dental extraction, surgeons usually ask about supplements. Say garlic tablets out loud, even if they feel too “natural” to count. Many surgical teams ask patients to stop garlic supplements a week or two before a planned procedure. Your own team will give you the exact instruction.
If it comes in a capsule, it counts as a supplement. Tell the surgeon.
Raw garlic on skin: the burn nobody expects
Social media still passes around garlic tricks for acne, warts, earache and toothache. The pungent compounds that make your eyes sting while chopping are strong enough to damage skin. Left on for hours under a plaster or sock, raw garlic can cause redness, blistering and burns that look like scalds. Children’s skin is thinner and burns faster. Some people also develop an allergic rash on their fingertips from handling it every day.
Please don’t put a clove inside the ear. It can burn the delicate canal and pieces can get stuck. Toothache needs a dentist, not a clove pressed against the gum.
If garlic has already burned the skin
Remove it, then hold the area under cool running tap water for about 20 minutes. Don’t add toothpaste, butter or more home pastes. Cover loosely with a clean non-fluffy dressing. Our kitchen burn first aid guide covers what to do next and when it needs a doctor.
Buying and storing lehsun
At the sabzi stall
Pick heavy, tight bulbs with dry papery skin. Squeeze gently; each clove should feel firm. Avoid bulbs with green shoots poking out, soft brown patches, or a grey dusty mould between the cloves. Desi garlic has small, strong cloves that are fiddly to peel. Imported Chinese garlic has big, milder cloves. Both are fine; use a little more of the milder kind.
At home
- Keep whole bulbs in a basket or mesh bag, somewhere cool, dark and airy. Not in a sealed plastic bag.
- Whole bulbs usually keep a few weeks. Once broken apart, use the cloves within about 10 days.
- Peeled cloves go in a closed box in the fridge and should be used within a few days.
- Garlic stored in oil is a special case with a real botulism risk. We cover the safe method in our ginger-garlic paste guide.
Myths and what’s actually true
“Garlic in the pocket keeps illness away.” A lovely old idea. There’s no reason to think it does anything except make your kurta smell.
“Sprouted garlic is poisonous.” Not true. The green shoot tastes bitter, so pull it out, but the clove is safe if it is firm.
“More raw garlic is always better.” No. Large raw amounts cause heartburn, gas, body odour and, for some, nausea. Food amounts are the sensible frame.
“Garlic replaces blood pressure tablets.” Please don’t stop or skip any prescribed medicine because of a kitchen food. Eat garlic as food, and keep taking what your doctor prescribed.
You take warfarin or any blood thinner, or have a bleeding disorder: keep garlic to normal cooking amounts and don’t start supplements without your doctor agreeing. You have surgery or a tooth extraction coming up: mention any garlic supplement to the team. You’re pregnant or breastfeeding: garlic as food is ordinary, but skip high-dose capsules unless your doctor says otherwise; strong garlic can also change the taste of breast milk. You have reflux or a sensitive stomach: raw garlic may make it worse. Never apply raw garlic to a baby’s or child’s skin. Get medical help for a garlic burn that blisters widely, is on the face, or belongs to a child, and for any allergic swelling of the lips or throat or wheeze.
FAQ
How much garlic is fine to eat daily?
One or two cloves a day as part of meals is a normal household amount. There’s no need to push it higher, and if raw garlic upsets your stomach, cook it.
Why should I wait 10 minutes after crushing garlic?
Crushing lets two separate compounds in the clove meet and form garlic’s pungent character. Heat stops that process, so a short rest before cooking keeps more of the fresh bite.
Can I give raw garlic to children?
Small amounts cooked into family food are fine for most children. Raw cloves are harsh on small stomachs, and garlic must never be taped onto a child’s skin or feet.
Is garlic safe in pregnancy?
As an ordinary cooking ingredient, yes for most women. Avoid garlic supplements and very large raw amounts unless your obstetrician says it’s fine, particularly near delivery.
Garlic before surgery: do I need to stop?
Food amounts are usually not an issue. Garlic tablets, oil capsules and extracts should be mentioned to your surgeon, who may ask you to stop them in advance.
How do I get rid of garlic breath?
Chew a few saunf seeds or fresh pudina, drink water, and eat an apple. Milk or dahi with the meal helps some people too.
More everyday kitchen ingredients, explained carefully, live in our Desi Remedies section.