Quick answer: Honey crystallises because it holds more sugar than its water can keep dissolved. Over time the glucose comes out of solution and forms crystals, so the honey turns thick, grainy or solid. This is a natural physical change, not spoilage, and crystallised honey is safe to eat. To make it runny again, stand the closed jar in warm (not hot) water. One important point: crystallisation does not prove honey is pure, and staying liquid does not prove it is fake.
Does real honey crystallize? Yes, most raw honey sets sooner or later. But fake, syrup-cut honey can set too, so a jar that crystallises is not proof either way.
| At a glance | Crystallised honey |
|---|---|
| Is it spoiled? | No. It is the same honey in a different texture. |
| Why it happens | Glucose separates out of a supersaturated sugar solution |
| What speeds it up | More glucose, cool storage (around 10–15°C), tiny particles such as pollen |
| How to reverse it | Closed jar in a bowl of warm water, stirring now and then |
| Does it prove purity? | No. Use a batch NMR report for that. |
What is crystallisation?
Honey is mostly two sugars, fructose and glucose, with only about 17–20% water. That is far more sugar than the water can normally hold, so honey is a supersaturated solution. Glucose is the less soluble of the two sugars. Given time, glucose molecules link up into tiny crystals, and the crystals spread through the jar. The fructose stays liquid around them.
Nothing is added and nothing is lost. The colour usually turns lighter and more opaque, because crystals reflect light differently. The taste stays the same.
Why some honeys crystallise faster than others
Three things decide how quickly a jar sets.
1. The sugar balance of the flower
Honeys with more glucose relative to fructose crystallise faster. This depends on the nectar the bees collected, so it varies by flower:
- Fast: mustard honey is well known in India for setting within days or weeks of harvest.
- Slow: acacia honey is high in fructose and can stay liquid for a very long time.
- In between: most multiflora and many single-flower honeys set over weeks or months.
Each Shuddhta product page describes how that honey usually behaves. Different honeys from the same brand will set at different speeds, and that is normal.
2. Temperature
Honey crystallises fastest when it is cool, roughly 10–15°C, which is why many jars set in winter. A warm kitchen slows it down. Honey does not need to go in the fridge, and the cold there makes it harder to scoop.
3. Tiny particles
Crystals need a starting point. Pollen grains, bits of wax and existing micro-crystals all act as "seeds". Raw honey that is only strained keeps more of these, so it often sets sooner than honey that has been heated and finely filtered.
Does real honey crystallise? Does fake honey crystallise too?
Both can, so crystallising proves nothing about purity. Believing it does is the most common myth about honey in India.
- Adulterated honey can crystallise. Honey cut with sugar syrup still contains glucose and can still set.
- Genuine honey can stay liquid. A high-fructose honey, or any honey kept warm, may stay runny for months.
- Heating and fine filtering slow crystallisation, so a jar that never sets may have been processed. But that tells you about processing, not about added syrup.
The only reliable way to check for added syrup is a laboratory test. Read how NMR testing works and why home purity tests cannot do the same job.
How to make crystallised honey runny again
- Keep the lid on so no water gets in.
- Stand the jar in a bowl of warm water, comfortable to the touch (around 40°C).
- Leave it for 15–30 minutes and stir with a dry spoon now and then. Replace the water as it cools.
- Repeat if needed. A very solid jar can take longer.
Avoid: the microwave, boiling water, or putting the jar directly on the stove. High heat darkens honey, dulls its aroma and reduces its natural enzymes. Only warm as much as you will use soon, because repeated heating and cooling is not good for any honey. Read more in what heat really does to honey.
Can you eat crystallised honey as it is?
Yes. Many people prefer it. Crystallised honey spreads like butter on toast or roti and does not drip. "Creamed" or "set" honey sold abroad is simply honey crystallised slowly and evenly so the crystals stay very fine. You can stir a spoon of crystallised honey straight into warm (not boiling) tea, milk or kadha, and it dissolves.
When crystallisation is a problem: fermentation
Crystallisation itself is harmless. But when glucose crystallises, the liquid left between the crystals holds slightly more water. If extra moisture has got into the jar, from a wet spoon or a loose lid in humid weather, that liquid can start to ferment.
Signs of fermentation:
- A sour, alcoholic or yeasty smell
- Foam or bubbles on top
- A watery layer separating from the crystals
If you see these, do not use the honey. To prevent it, keep the lid tight and always use a dry spoon. See how to store honey and whether it expires, and for the monsoon, barsaat mein honey kaise store karein.
What this means for Shuddhta honey
All Shuddhta honeys are raw: strained, never heated above 40°C, with no added sugar, and NMR tested batch by batch at an independent laboratory. Because they are not heat-treated, most of them will crystallise at some point, some within weeks and some much later. That is expected. If your jar sets, warm it gently or enjoy it as a spread.
Keep reading: how to choose the best raw honey in India, raw vs processed honey and how to identify pure raw honey.
Frequently asked questions
Is crystallised honey spoiled?
No. It is a natural change in texture. Honey is only spoiled if it smells sour or yeasty, foams, or shows mould, which usually means water got into the jar.
Does crystallised honey mean it is pure?
No. Both genuine and adulterated honey can crystallise, and genuine honey can stay liquid. Ask for a batch NMR report instead.
Which honey does not crystallise?
No honey is guaranteed never to set. High-fructose honeys, such as acacia, set very slowly. Heated or finely filtered honey also stays liquid longer, which tells you about processing, not purity.
My honey crystallized: what should I do?
Nothing is wrong with it. Eat it as a spread, or stand the closed jar in warm water (about 40°C) for 15–30 minutes and stir with a dry spoon.
Why did my honey crystallise in winter?
Cool temperatures, around 10–15°C, are when honey crystallises fastest.
Should I keep honey in the fridge to stop crystallisation?
No. The fridge does not stop it and makes honey hard to scoop. Keep it at room temperature, away from sunlight and moisture.
Can I microwave crystallised honey?
It is better not to. Microwaves heat unevenly and can overheat parts of the honey. Use a warm-water bath.
Shahad jam kyun jaata hai? Kya woh kharab ho gaya?
Nahi. Shahad mein glucose dheere-dheere crystal bana leta hai, khaaskar thand mein. Yeh natural hai. Jar ko gungune paani mein rakhein, shahad phir se patla ho jaayega. Lekin jamna purity ka saboot nahi hai.
Asli shahad jam jata hai kya?
Haan, asli kaccha shahad aksar jam jaata hai, khaaskar sardi mein. Lekin milawati shahad bhi jam sakta hai, isliye sirf jamne se asli-nakli ka pata nahi chalta. Batch ki NMR report dekhein.
About the author
Pranjal Patel is the founder of Shuddhta Organic and oversees sourcing and batch testing for its raw honeys. Read our story.
Last updated: 26 October 2026.
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