Fake Khoya (Mawa), Chandi Ka Warq and Mithai Colour Checks

Before Eid and in shaadi season, sweet shops need three times their usual khoya, and there isn’t three times as much milk. That gap is where fake khoya (mawa), aluminium “chandi ka warq” and neon mithai colour come from. At home you can do a few honest checks: warq that rubs to grey powder is suspect, khoya that goes greasy or sour fast is suspect, colour that stains your fingers is suspect. None of them proves adulteration. This buyer’s checklist shows what each cue really tells you, and how long each kind of mithai keeps.

How is khoya made, and what fake khoya is

Khoya, called mawa in much of India and “reduced milk solids” or dried whole milk in English, is milk simmered and stirred for an hour or more until the water has boiled away and a soft, grainy dough is left. Roughly 5 litres of milk give about 1 kg of khoya. That ratio sets its price, and it’s why khoya is the first thing to be stretched when demand spikes.

Fake or adulterated khoya usually means one of these:

• Milk powder khoya. Skim milk powder mixed with oil or vanaspati and cooked down. It’s cheaper and quicker. Made honestly and labelled, it’s a product in its own right; sold as pure khoya, it isn’t.
• Starch or maida filled khoya. Boiled potato, sweet potato, arrowroot or flour adds weight and body.
• Vanaspati or palm-fat khoya. Vegetable fat replaces the milk fat that should be there.
• Old or soured khoya. Stock carried over from the last rush, sometimes re-cooked with sugar to hide the sour smell. This is the one most likely to make someone ill, because khoya is a perfect food for bacteria.

Did you know? Khoya holds only about 20 to 30 percent water, which sounds dry, but it’s warm, sweet and rich in protein, exactly the conditions bacteria like. Most “mithai food poisoning” stories are about spoiled khoya, not exotic chemicals.

How to check khoya: what a buyer can see and smell

1. Look. Fresh khoya is off-white to pale cream, with a soft, slightly grainy surface. Bright white, very smooth khoya can be powder-based; greyish or yellow patches suggest age.
2. Smell. It should smell rich and milky, a little like cooked malai. A sour, cheesy or rancid smell is old stock. A flat or oily smell hints at vegetable fat.
3. Rub a pinch. Rub a small piece between your thumb and fingers for a few seconds. Real khoya feels oily in a buttery way and slightly grainy. Very sticky or pasty khoya hints at starch; a slick, greasy film that won’t rub in hints at vegetable fat.
4. Warm a spoonful. Warm a spoonful in a dry pan at home. Real khoya softens and releases a little ghee with a milky smell. Khoya that turns runny and oily with no milky aroma is a hint of vegetable fat. This is ordinary cooking, not a burn test; stop when it softens.
5. Watch how it keeps. Pure fresh khoya sours in a day or so at room temperature in summer. Khoya that sits on a counter for days without changing has something in it that milk doesn’t have, or it’s powder-based.

What these checks can’t do is measure starch, fat source or germs. The iodine starch test works on khoya the same way as on paneer, and the same rule applies: it’s a lab-type test for a sample, never for sweets someone will eat. Only a food lab can confirm adulteration.

Why festival khoya is the riskiest

In a normal week a halwai uses khoya made the same day. In the week before a festival, khoya is made in bulk days ahead, often in small units far from the city, and transported without refrigeration in the heat. Even perfectly honest khoya becomes a food-safety risk under those conditions. That’s why the safest festival plan is fewer sweets from a busy, clean shop, bought the day you’ll eat them, or khoya you make yourself from milk you trust.

Chandi ka warq: real silver or aluminium?

Chandi ka warq is silver beaten into a leaf so thin that it’s lighter than a feather and breaks when you breathe on it. Traditionally it was made by hammering small pieces of silver between layers of paper or animal gut for hours. Today most warq is made by machine between sheets of special paper, which is how chandi ka vark banta hai in most of the trade now, and it’s used on barfi, kaju katli, paan and rice.

The cheat is aluminium foil beaten or rolled thin and sold as silver, because it costs a tiny fraction of the price. Aluminium leaf looks similar on a sweet, but behaves differently in the hand:

• Rub test. Lift a small bit of the leaf from the sweet onto your fingertip and rub it gently with another finger. Real silver leaf is so fine it breaks into tiny flakes and nearly disappears. Aluminium leaf tends to hold together, tear in pieces, and leave a greyish smear.
• Roll test. Pinch a scrap between two fingers. Silver leaf crumbles to powder. Aluminium tends to roll into a small ball, like kitchen foil.
• Shine. Silver has a soft white shine. Aluminium can look duller and more grey, though lighting makes this hard to judge.

These checks are useful cues on a sweet you’re deciding whether to buy again. They aren’t a lab result, and the popular trick of burning warq to see if it leaves a ball of ash is exactly the kind of thing not to do with food. What we can say in general terms: food regulators in both India and Pakistan permit only pure, food-grade silver leaf on sweets, and aluminium leaf sold as silver is treated as adulteration. Many shops and buyers now skip warq entirely, which is a sensible choice. A sweet is not less real without it.

Mithai colour: sweet-shop cues only

The full list of permitted and banned food colours, and why metanil yellow and some textile dyes turn up in cheap sweets and zarda, is in our zarda rang food colour safety guide, so we won’t repeat it. At the counter, these are the cues worth noticing:

• Neon shades. Glowing lemon-yellow jalebi, fluorescent pink or electric green barfi. Permitted colours can be bright, but the most shocking shades are where banned dyes tend to appear.
• Colour that stains fingers. Touch the sweet and look at your fingertip. Heavy colour that stays on skin means a lot of colour, and possibly not a food-grade one.
• Colour that bleeds. Colour running into the syrup, the box liner or the next sweet suggests heavy use.
• Uneven colour on a white sweet. Rasgulla or chum chum with a yellow tinge that isn’t saffron can be old stock or added colour.

An easy rule: saffron-coloured sweets should smell of saffron. And many good shops now sell sweets with little or no added colour, which is a reasonable default for children.

Myth: “a strong ghee smell means pure khoya”

Ghee smell can be added. Flavour essences that smell of ghee and milk are sold openly to sweet makers, and a small spoon of real ghee rubbed on top of vanaspati mithai gives a convincing aroma. Smell is still useful for spotting sour or rancid stock, because bad smells are hard to hide. A good smell alone proves very little.

How long mithai keeps, by type

Throw out any sweet with a sour or cheesy smell, slime, fizzing syrup, or mould spots. Scraping off a patch doesn’t make the rest safe.

If you’re watching portions over the festival days, our guide to mithai portions at Eid and shaadis helps. More honest food checks are collected in Desi Remedies.

Fake khoya, warq and mithai: questions people ask