Is Raw Honey Pasteurised? What Really Happens Before It Reaches the Jar

Raw honey is not pasteurised. True raw honey is never heated above the natural temperature of the hive (roughly 35°C), whereas pasteurisation involves heating honey to around 70 to 80°C to kill yeast cells and slow crystallisation. If a honey has been pasteurised, it is, by definition, no longer raw. This distinction matters more than most shoppers realise, and it's worth understanding exactly what happens to honey before it reaches a jar, whether that's a small batch from a British beekeeper or a plastic bottle on a supermarket shelf.

What Does Pasteurised Actually Mean?

Pasteurisation is a heat treatment borrowed from the dairy and juice industries, where it genuinely serves a safety purpose by killing harmful bacteria. Honey, however, is naturally hostile to most microorganisms. Its low moisture content, high acidity and natural hydrogen peroxide production mean that properly ripened honey rarely needs any intervention to make it safe to eat. So why do some producers pasteurise it anyway?

The answer is almost entirely cosmetic. Heating honey to pasteurisation temperatures kills off wild yeast cells that can cause fermentation, and it also dissolves the tiny sugar crystals that would otherwise form over time. The result is a honey that stays liquid and glossy on the shelf for longer, which suits large-scale retail but has nothing to do with food safety.

How Is Raw Honey Processed Instead?

Raw honey processing is about doing as little as possible. Once a beekeeper removes full frames of capped honeycomb from the hive, the honey is typically extracted using one of these gentle methods:

• Cold extraction: frames are placed in a centrifugal extractor that spins the honey out of the comb using force alone, with no heat involved
• Straining: the extracted honey passes through a coarse mesh or nylon strainer to remove bits of wax and bee parts, but pollen grains and fine particles remain
• Settling: honey is left to rest in a settling tank for a few days, allowing any air bubbles to rise naturally before jarring

At no point in this process does the honey exceed hive temperature. This is what beekeepers mean by cold extracted honey, and it's the standard method used by small-scale, independent producers across Britain. The honey that reaches the jar still contains its full complement of enzymes, antioxidants, trace pollen and the subtle aromatic compounds that come from the specific flowers the bees foraged on.

Why Does Unheated Honey Taste and Behave Differently?

Unheated honey tends to crystallise faster and more noticeably than heat-treated honey, and this is one of the clearest practical signs that a honey is genuinely raw. Crystallisation happens because raw honey contains a natural ratio of glucose to fructose, along with fine particles of pollen and propolis that act as seeds for crystal formation. Heat-treated honey has had many of these particles filtered or dissolved away, so it resists crystallising for much longer, sometimes for years.

Far from being a flaw, crystallised honey is a reassuring sign that nothing has been stripped out or interfered with. It's also easily reversed at home: standing the jar in a bowl of warm (not boiling) water gently returns it to a pourable liquid without damaging its structure, as long as you keep the temperature below about 40°C.

In terms of flavour, raw honey tends to carry more of the character of its source, whether that's the sharp, almost savoury note of heather honey, the light floral lift of a spring blossom honey, or the layered complexity of a wildflower blend gathered across a single region. Heating flattens many of these nuances, which is part of why blended, pasteurised honeys often taste quite uniform regardless of brand.

Does Pasteurisation Affect Honey's Natural Properties?

Yes, heat has a measurable effect on several of honey's most valued qualities. Studies have shown that heating honey reduces levels of certain enzymes, such as diastase and invertase, which bees add during the ripening process and which are often used as a marker of honey quality and freshness. Heat can also degrade some of the delicate aromatic compounds and reduce pollen content, which matters to anyone seeking out local honey specifically for its connection to a particular area's flora. The British Beekeepers Association has long highlighted the differences between raw, minimally processed honey and the more heavily filtered and blended products common in mass retail.

It's worth noting that raw honey is not fragile. It's simply unheated. Properly extracted and stored raw honey has an extremely long natural shelf life thanks to its low water activity, so there's no safety reason to pasteurise it. The practice exists for appearance and convenience at scale, not for the benefit of the honey or the person eating it.

If you'd like to taste the difference for yourself, find raw honey from a beekeeper near you and compare it side by side with a supermarket blend. The contrast in aroma, texture and crystallisation pattern is usually obvious within the first spoonful.

How Can You Tell If Honey Has Been Pasteurised?

There's no legal requirement in the UK for honey labels to state whether a product has been pasteurised, which makes it genuinely tricky to tell from packaging alone. A few practical clues can help:

• Origin: labels reading "a blend of EU and non-EU honeys" almost always indicate large-scale, heat-treated, imported honey rather than a single-origin raw product
• Texture: honey that remains perfectly clear and liquid for a year or more on the shelf has very likely been heat-treated and filtered
• Source: honey bought directly from a named British beekeeper, with details of the apiary location and harvest season, is far more likely to be raw and unheated
• Price and packaging: ultra-cheap honey in squeezable bottles is a strong indicator of industrial processing, including pasteurisation and fine filtration

The most reliable approach is simply to buy from producers who are transparent about their methods. Independent beekeepers who sell raw wildflower honey, heather honey or seasonal blossom honey are generally happy to explain exactly how their honey was extracted, because the process is something to be proud of rather than hidden.

Choosing Honey You Can Trust

Understanding raw honey processing helps explain why provenance matters so much. A jar of raw wildflower honey from a Yorkshire apiary in June will taste entirely different from a raw heather honey gathered from Scottish moorland in late summer, and both will differ again from a delicate spring blossom honey. These distinctions only survive the journey from hive to jar when the honey has been handled gently and kept away from heat.

When you're ready to taste honey exactly as the bees made it, discover raw honey from an independent beekeeper near you and support the small-scale producers keeping traditional, unheated methods alive across Britain.

Find raw honey from a beekeeper near you

Written with the help of AI for Local Honey, championing pure, raw honey from independent British beekeepers.

This article is for general information and is not medical advice.