Adulterated ghee: how to check ghee purity at home

Adulterated ghee is ghee mixed with something cheaper, most often vanaspati (hydrogenated vegetable fat), other vegetable oils, animal body fats such as tallow, or starches like mashed potato. Home tests catch only crude tricks, such as added starch. Only laboratory analysis can show that ghee is pure.

Ghee adulteration is a recurring problem in India, and the internet is full of easy purity tests, some helpful, some useless. Here is what fake ghee is made of, how to check purity of ghee at home and where those tests stop, what a laboratory looks for, and what to do if you suspect a jar.

At a glance

• Adulterated ghee is usually cut with vanaspati, cheaper vegetable oils, animal body fat or starch.
• The iodine test can reveal added starch or mashed potato; a blue or purple colour is a red flag.
• The classic acid-and-sugar test flags vanaspati only through the sesame oil that Indian vanaspati carries as a marker, and it needs corrosive acid.
• Palm-melt, water-float and fridge-layer tests cannot tell pure ghee from a clever blend.
• If you suspect a jar, stop using it, keep the pack and bill, and report it to FSSAI or your state food safety office.

What is adulterated ghee mixed with?

Mostly with fats that cost less than milk fat and pass for it at a glance; less often, with starch for bulk. Blends can also be coloured and flavoured to seem more like ghee, so colour and smell are poor guides.

How to check purity of ghee at home

You cannot prove purity at home; you can only screen for crude adulteration. The table shows what the popular tests can and cannot tell you.

The popular palm test is the least useful: ghee melts over a wide range, roughly 28°C to 44°C (82°F to 111°F), and many blends soften the same way.

Is the iodine test for ghee reliable?

Yes, for one thing: starch. It is a quick, cheap screen for ghee bulked up with mashed potato, sweet potato or other starches, and India's food regulator, FSSAI, includes it in its consumer guidance on spotting adulteration at home.

1. Put half a teaspoon of melted ghee in a small, clear glass bowl.
2. Add 2 or 3 drops of tincture of iodine, available from a pharmacy.
3. Watch for a minute.
4. If the drops stay brown, no starch is showing. If the ghee turns blue or purple, starch is present.
5. Never taste the sample. Throw it away, wash the bowl, and keep the iodine, which is poisonous if swallowed, away from children.

A clean result only rules out starch. Blends with cheaper fats, a common form of adulteration, are invisible to iodine.

How do you detect vanaspati in ghee?

Reliably, only in a laboratory. Vanaspati is hydrogenated vegetable fat, and Indian food rules have long required it to carry a little sesame oil as a tracer. The Baudouin test detects that sesame oil: shaken with hydrochloric acid and sugar, a sample containing it turns crimson. Home versions of this test circulate online, but they use concentrated hydrochloric acid, which is corrosive and can cause serious burns. Leave it to a lab.

The test also has a blind spot: it misses palm oil, other vegetable fats and animal body fats that carry no sesame oil. So laboratories add a phytosterol test. Plant fats contain plant sterols and milk fat does not, so finding them in ghee signals vegetable fat.

What does a lab test for ghee check?

A set of measurements that together describe milk fat. Indian standards set limits for each, and they vary slightly by region and season, because the animals' diet changes the fat.

Skilled blending can sometimes keep the BR and RM figures within range, which is why modern labs also look at sterols and the full fatty-acid profile by gas chromatography. A report showing all of these is far stronger evidence than any home test.

How to identify pure ghee when you buy it

No kitchen test can settle it, so start with the maker: a good ghee brand will answer a few plain questions plainly.

• What milk is it made from, and by what method: from cream, from butter, or from curd by the bilona method?
• Is the FSSAI licence number on the label, and does the ingredient list say only ghee or milk fat?
• Is the maker easy to reach, and do you get a clear, specific answer when you ask how the ghee is made?
• If you need certainty about a particular jar, only an accredited laboratory can give it; the FSSAI route below explains how a buyer can have a sample tested.

Labels can be read critically too; our guide to reading an oil label in India explains the FSSAI and Agmark marks, and the same habits apply to ghee.

What to do if you suspect adulterated ghee

Stop eating it, and do not try to prove it yourself with acids or other chemicals. Then take the FSSAI route:

1. Keep the pack, the bill and a clear photo of the label, including the batch number and the FSSAI licence number.
2. Report it to FSSAI through its consumer complaint channels, such as the Food Safety Connect app, or to your state's food safety department.
3. To have it tested, ask that office how a buyer can get a sample analysed by a government food analyst, which Indian food law allows for a fee.

Where our ghee stands

Our A2 Gir cow ghee is made by the bilona method from Gir cow milk, about 25 to 28 litres of milk to a litre of ghee, and it is naturally golden and grainy. Neither colour nor grain is proof of purity for any brand, ours included, which is why the questions above are worth asking of every jar you buy.

The bottom line

Adulterated ghee is usually cut with cheaper fats that no kitchen test can see. Use the iodine test as a first screen for starch, skip the acid test, buy from makers who answer questions plainly, and report a suspect jar to FSSAI.

Frequently asked questions

Does pure ghee turn grainy?

Often, yes, when it cools slowly, because its higher-melting fats crystallise into grains. But grain is a texture, not a purity test: blends can be made grainy, and pure ghee cooled quickly in a fridge can be smooth. Judge purity by laboratory results, not by grain.

Is yellow ghee purer than white ghee?

No. Colour depends mostly on the milk. Cow milk fat carries beta-carotene from green fodder, so cow ghee is golden, while buffalo milk fat carries very little, so buffalo ghee is white. Season and feed change the shade too. Colour tells you about the source, not about purity.

Can you spot fake ghee by its smell?

Not reliably. Fresh cow ghee smells nutty and sweet, like cooked milk or caramel, and bilona ghee often has a slightly tangy, cultured note. Smell is a useful freshness check, since rancid ghee smells sharp or soapy, but flavourings can imitate the aroma of ghee, so a good smell does not prove purity.

What does Agmark mean on a ghee jar?

Agmark is a quality grading mark from the Government of India's Directorate of Marketing and Inspection. For ghee it sets grades with limits that are, in places, stricter than the basic FSSAI rules, such as lower moisture. Its absence does not by itself mean that a ghee is impure.

Can a home test detect animal fat in ghee?

No. Animal body fats such as tallow or lard cannot be spotted reliably at home, because their melting behaviour and smell overlap with those of ghee. Laboratories detect them with specialised analysis of fatty acids and other components, one more reason to rely on proper laboratory analysis.

Sources

• Warehousing Development and Regulatory Authority (Government of India), Ghee quality specifications (accessed 2026)
• e-PG Pathshala (INFLIBNET), dairy technology module on ghee: adulteration and its detection (accessed 2026)
• Consumer VOICE comparative testing report on cow ghee, published by the Department of Consumer Affairs, 2023