Manuka Honey: MGO, Use and Quality

Few honeys divide opinion quite like Manuka: some call it an overpriced hype, others a natural treasure from New Zealand. What's certain is that behind the high price sits a distinctive botanical origin and a measurable compound called MGO. But what do the numbers on the jar actually mean, and how do you spot genuine quality? This guide takes a sober look at what makes Manuka honey what it is – and what to look out for.

What Is Manuka Honey?

Manuka honey is a monofloral honey produced by honeybees from the nectar of the Manuka myrtle (Leptospermum scoparium). The shrub grows mainly in New Zealand and parts of Australia and flowers for only a few weeks each year. Because the harvesting window is short and the growing areas are often remote, the available quantity remains limited – one of the reasons for its comparatively high price.

In colour, Manuka honey ranges from light amber to dark brown, with a texture that's usually creamy to thick, and a bold, slightly malty, earthy flavour. Like any honey, it's first and foremost a food: it consists of roughly 80 percent sugar, mainly fructose and glucose. That's worth keeping in mind if you're eating it by the spoonful – more on that later.

MGO, UMF and the Numbers on the Jar

The compound that sets Manuka apart from ordinary honey is called methylglyoxal, or MGO for short. It forms in the honey from a precursor compound found in Manuka nectar, and occurs in significantly higher amounts in Manuka than in other types of honey. MGO content is stated in milligrams per kilogram and can be measured in a lab, which is why it's considered a comparatively objective marker.

What the MGO Figure Means

On reputable jars, you'll find figures such as MGO 100, MGO 400 or MGO 550. The number represents the measured amount of methylglyoxal per kilogram of honey: MGO 400 means 400 mg of MGO per kilogram. The higher the figure, the rarer the honey, and generally the higher the price. A higher MGO figure doesn't automatically make the honey "better" for every purpose – to begin with, it simply describes the concentration of this one compound.

UMF as a Second Rating

Alongside MGO, you'll often come across the abbreviation UMF (Unique Manuka Factor). This refers to a New Zealand grading and certification system that considers additional markers of genuine Manuka honey alongside MGO. The two scales can be roughly converted into one another – a UMF rating of around 10 corresponds to roughly MGO 250, while UMF 15 is about MGO 500. If you're comparing products, make sure the figures refer to the same scale.

How to Recognise Genuine Quality

Because Manuka commands such high prices, plenty of products on the world market are labelled as such without always deserving the name. A look at a few key features helps you separate genuine goods from marketing.

First, look for a specific, lab-verified MGO or UMF figure rather than vague terms like "active" or "strong" without a number attached. Second, the origin should be clearly stated – genuine Manuka comes from New Zealand or Australia, ideally with details of the region and the bottler. Third, a batch number and a test certificate are good signs; some suppliers make their analysis results available online. New Zealand has also introduced an official government definition for Manuka honey that export goods must meet.

Be wary of bargain prices well below market level combined with a high MGO claim, as well as honey sold as Manuka that states neither its origin nor a measurable value. As with other high-quality natural products – a good black seed oil, for example – it pays to focus on transparency and verifiable testing rather than price alone.

Who Manuka Honey Is For

Manuka honey is traditionally valued as a fine, indulgent honey: straight off the spoon, stirred into tea, or spread on bread. If you already enjoy honey and appreciate a distinctive, single-source speciality, you'll find a high-quality product here with a characterful taste. As a culinary highlight, it fits well with a mindful, natural diet that might also include other plant-based products such as wheatgrass or oregano oil.

Importantly, Manuka remains a food. If you value it for its taste and origin, you're making a good choice. If you expect specific health effects from a honey, it's worth keeping your expectations realistic and discussing any health concerns with a doctor – more on this further down.

Use in Everyday Life

In the kitchen, Manuka honey is easy to use. It tastes most intense enjoyed neat: a teaspoon straight off the spoon, left to slowly dissolve in the mouth. It's also popular as a sweetener for tea, yoghurt, porridge or quark, and as a bold topping on fresh bread.

A practical preparation tip: don't stir honey into boiling-hot drinks – wait until your tea has cooled to drinking temperature. High heat alters the aroma and some heat-sensitive compounds. A clean, dry spoon is all you need for scooping it out, which helps the honey keep well for longer.

There's no universal recommendation for how much to have, since Manuka is a food rather than a food supplement with a defined dosage. In practice, many people settle on one to two teaspoons a day. What matters most is the sugar: like any honey, Manuka is mostly sugar, so it comes with calories to match. If you're watching your sugar intake or have diabetes, enjoy it mindfully and in moderation. Honey of any kind – Manuka included – is not suitable for infants under twelve months, because it can, in rare cases, contain spores that an immature gut cannot yet cope with.

Because Manuka has such an intense, distinctive flavour, you often need less of it to sweeten something than you would with a mild blossom honey. If you want to fully savour its character, it's best paired with neutral bases such as natural yoghurt, porridge or mild white bread, rather than stirred into strongly flavoured dishes.

Storage and Shelf Life

Honey naturally keeps for a long time. Store Manuka honey somewhere cool, dry and away from light, ideally tightly sealed at room temperature and not right next to the cooker. If the honey crystallises over time or becomes firmer, that's not a sign of poor quality but a natural process. Using a clean spoon every time you scoop some out stops moisture or crumbs from getting in.

An Honest Assessment: What's Established and What Isn't

What's established is that Manuka honey has a distinct botanical origin, and that it contains MGO, a compound that measurably sets it apart from other honeys. It's equally clear that it's a sugar-rich food with an intense flavour and limited availability – which explains both its price and its popularity as a delicacy.

The evidence is less clear-cut for many of the claims that circulate around Manuka. Numerous statements are based on laboratory studies or small trials whose relevance to everyday life is limited. Honey is no substitute for a balanced diet or medical treatment. If you have health concerns or want to use Manuka specifically for health reasons, speaking to a doctor or pharmacist is the right approach. As what Manuka undeniably is – a distinctive, high-quality honey to enjoy – you can indulge in it without hesitation. If you're generally interested in well-researched natural substances, our guide on D-mannose also offers a factual overview.

Frequently Asked Questions (FAQ)

What Does MGO Mean in Manuka Honey?

MGO stands for methylglyoxal, a natural compound that occurs in higher concentrations in Manuka honey than in other types of honey. The number after MGO shows the measured amount in milligrams per kilogram – for example, 400 mg per kilogram for MGO 400. It serves as an objectively measurable marker for comparing different products.

Is a Higher MGO Rating Always Better?

Not necessarily. A higher MGO figure means a higher concentration of methylglyoxal, and usually a rarer, more expensive honey. For simple enjoyment, a lower figure is often perfectly sufficient. Higher figures are mainly chosen by people looking for a particularly characterful, premium Manuka – the number alone is not a guarantee of any specific benefit.

How Much Manuka Honey Can You Eat a Day?

There's no fixed recommendation, since Manuka is a food. Many people have one to two teaspoons a day. Because Manuka is mostly sugar, it's best enjoyed in moderation like any other honey – especially if you're watching your sugar and calorie intake or have diabetes.

How Can I Recognise Genuine Manuka Honey?

Genuine Manuka honey carries a clear, lab-verified MGO or UMF figure, states its origin as New Zealand or Australia, and ideally comes with a batch number and test certificate. Noticeably cheap prices combined with a high MGO claim are a warning sign. Transparency about origin and test results is the most important quality marker.

Can You Add Manuka Honey to Hot Tea?

Yes, in principle, but let your tea cool to drinking temperature first. Boiling-hot liquid alters the aroma and heat-sensitive compounds in the honey. So stir the honey in once the tea is lukewarm, and the flavour will be best preserved.

Ultimately, Manuka honey is exactly what it is: a distinctive, rare honey from New Zealand with a measurable characteristic called MGO. If you pay attention to transparent origin, lab-verified figures and mindful handling of its sugar content, you're bringing home a premium delicacy – while knowing exactly where the realistic limits lie.