Rubber tree honey

Mild and slightly vegetal with a light caramel warmth — an unremarkable flavour attached to a genuinely remarkable production story.

MonofloralMildVegetalCaramelFloral

A honey made almost entirely from nectar that is not in a flower. Rubber trees carry extrafloral nectaries at the base of their leaves, which secrete heavily as new foliage flushes after the dry season, and the vast plantations of Thailand, Malaysia and Indonesia produce a major honey crop from them. It is one of the largest extrafloral honeys in the world and almost nobody outside southeast Asia has heard of it.

Flavour and aroma

Aroma: green leaf, light caramel, warm sugar, faint latex
Flavour: clean sweetness, a green vegetal note, light caramel
Finish: Short and clean.
Intensity: Mild
Sweetness: Very sweet
Bitterness: None
Acidity: Low

Colour, texture and crystallisation

Colour

Light amber (50-85 mm Pfund)Amber (85-114 mm Pfund)

Mid amber, clear and bright.

On setting: Slow to set; a medium grain when it does.

Texture

Runny; Thick but pourable

Crystallisation

Slow — months before it starts to granulate

Slow to granulate in the warm climate it is produced and stored in.

Typical composition

Moisture: 17–21.5% (typically 19%)
Fructose: 36–42% (typically 39%)
Glucose: 29–35% (typically 32%)
Glucose-to-fructose ratio: 0.72–0.9 (typically 0.81)
pH: 3.6–4.5 (typically 4)
Electrical conductivity: 0.2–0.6 mS/cm (typically 0.38 mS/cm)

These are typical ranges assembled across published work, not measurements of a specific honey. Moisture runs high, as it does for most honey ripened in humid tropical air, and prompt handling or dehydration is standard practice.

What these mean: the sugars and the ratio · moisture · conductivity · how each is measured

Where it comes from

Floral source: Hevea brasiliensis. The flowers themselves are small and contribute little; the crop comes overwhelmingly from extrafloral nectaries on the leaf petioles, which evolved to recruit ants as bodyguards against herbivores.
Origins: Thailand above all, plus Malaysia, Indonesia, Vietnam and southern India.
Origin pages: Southeast Asia
Thailand
Malaysia
Indonesia
Vietnam
Resolved from both directions — origins this honey names, and origins that name it.
Harvest: February to April (northern hemisphere)
Timed to the leaf flush after the dry season rather than to any flowering, which is why the window shifts with the rains.
The bees: A large, dependable and entirely one-sided relationship — the trees gain nothing from bees, since the nectar is aimed at ants. Thai migratory beekeepers move colonies into the plantations for the flush, and the crop is one of the country's largest.
Usual processing: Spun (centrifugally extracted), Coarsely strained, Filtered, Dried or granulated
Rubber honey is a striking example of a honey with no pollination relationship at all: the bees take nectar the tree produces to hire ants, and give nothing back. It is also entirely dependent on a monoculture plantation industry.

What to do with it

An everyday honey, used across southeast Asia as a general-purpose sweetener rather than as anything special.

At the tableSpreadingIn hot drinksBakingSauces

Pairings

Tea and iced coffee
Dissolves readily and adds nothing that would compete.
Toast and plain breads
A mild honey on a plain carrier.
Tropical fruit
Enough sweetness to lift the fruit and no flavour to argue with it.

Pairing pages this honey appears on

Selected by this honey’s own recorded intensity, flavour families and uses rather than by anything written above — each page prints the rule that put it there.

Where this honey sits in the catalogue

Sources

HoneyHQ editorial synthesis — HEKNO Ltd · HoneyHQ synthesis

How sources are selected and weighted is set out in the sources and evidence policy.

Guides that cover this honey

Types of honey: how the catalogue actually dividesHoney is sorted four different ways at once — by floral source, by colour, by texture and by processing — and a jar label usually mixes them. Knowing which axis a word belongs to is most of what it takes to read one.

Tools for choosing and using honey

Honey finder
Which honey should I buy for what I actually want to do with it?
Flavour selector
I like this taste — which honeys have it?
Honey comparison
How do these honeys actually differ, beyond colour?
Honey substitute calculator
How much honey do I use instead of sugar, and what else has to change?
Storage guide
How should I store honey, and what do I do when it sets?