How to Check if Ghee Is Pure at Home (and What Home Tests Can't Tell You)

Ghee is one of the most commonly adulterated foods in India. Every festive season brings news of food-safety teams seizing fake or mixed ghee. So it's natural to wonder: is the ghee in my kitchen actually pure?

The internet is full of "easy home tests". Some are useful, many are not. In this guide we walk you through the one home test that India's food regulator, FSSAI, recommends, explain why popular tricks can give you a false sense of safety, and show you what really tells you a ghee is pure.

What is ghee usually adulterated with?

• Vanaspati (hydrogenated vegetable fat)
• Cheaper vegetable oils, such as palm oil
• Animal body fat
• Starches, such as mashed potato or sweet potato, added to bulk up the ghee

Here's the important part: only starch can be reliably detected at home. The others look, smell and feel very similar to ghee and need a laboratory to detect.

The FSSAI home test: iodine test for starch

FSSAI's DART guide (Detect Adulteration with Rapid Test) lists a simple test for starch in ghee and butter.

You need: half a teaspoon of ghee, a small transparent glass bowl, and tincture of iodine (available at most chemists).

1. Take ½ teaspoon of ghee in a transparent glass bowl. If it's solid, let it soften or melt slightly.
2. Add 2–3 drops of tincture of iodine.
3. Watch the colour.

Result:

• No change in colour – no starch detected.
• Blue or purple colour – starch is present, meaning the ghee has been mixed with something like mashed potato.

Safety note: tincture of iodine is not for eating. Use a separate bowl, throw away the tested sample and keep iodine away from children.

Popular home "tests" – and why they can mislead you

You'll often see these tips online. They can tell you a little about a ghee, but none of them can prove it is pure.

1. The palm test

The claim: pure ghee melts quickly on your palm. The reality: most fats melt at body temperature, including many vanaspati blends.

2. The heating test

The claim: pure ghee melts fast and turns golden-brown with a rich smell. The reality: it can hint at very poor ghee, but blends made to look and smell like ghee will usually pass.

3. The freezing test

The claim: melted ghee that separates into layers in the fridge is mixed with oil. The reality: ghee naturally sets into a grainy texture and its fats set at different speeds, so layering can appear in perfectly pure ghee – and a well-made blend may not separate at all.

4. Smell and taste

Good ghee has a rich, nutty aroma – but aroma can be added with flavouring, so smell alone isn't proof.

Bottom line: if a ghee fails these tests, be suspicious. If it passes, that doesn't mean it's pure.

So how do you know ghee is really pure? Lab testing

Detecting vanaspati, vegetable oils or animal fat needs laboratory analysis against FSSAI's standards for ghee, such as:

• Butyro-refractometer (BR) reading – shifts when other fats are mixed in
• Reichert-Meissl (RM) value – characteristic of milk fat; drops when it's diluted with other fats
• Baudouin test – detects sesame oil, which Indian rules require in vanaspati, so it helps flag vanaspati blends
• Moisture and free fatty acids – indicators of freshness and careful making

That's why the most reliable check is a brand check: does the brand publish independent lab reports for its ghee?

A simple checklist before you buy ghee

1. Check the FSSAI licence number on the pack.
2. Look for published lab reports.
3. Read the label – made from milk, with no added vegetable fats or flavours.
4. Be wary of prices that seem too good to be true – pure ghee takes a lot of milk to make.
5. Do the iodine test if you have any doubt about starch.
6. Buy from a source you can trace – a brand that tells you where and how its ghee is made.

How Kalapurna makes sure its ghee is pure

Kalapurna ghee is made at our own manufacturing unit in Bhuj, Kutch, from the milk of A2 desi cows. Every batch is tested at NABL-accredited laboratories, and we publish our reports openly – so you don't have to take our word for it.

👉 See our lab test reports
👉 Explore our A2 ghee range

Frequently asked questions

Can I check for vanaspati in ghee at home?

Not reliably. Vanaspati and many oil blends look, smell and melt much like ghee. FSSAI's home test only detects starch; vanaspati needs a lab test.

What colour does pure ghee turn in the iodine test?

It shouldn't change colour. Blue or purple means starch is present.

Is grainy ghee always pure?

No. A grainy (danedar) texture comes from how ghee is made and cooled. It's a sign of traditional preparation, but it doesn't prove nothing is mixed in.

How do I know a ghee brand is trustworthy?

Check for an FSSAI licence, clear labelling, and independent lab reports the brand is willing to share publicly.

This article is for general information. For concerns about a food product, contact FSSAI through its Food Safety Connect app.