Metcalfa honeydew honey
Moderately sweet with a distinct fig and dried-fruit character over a malty base — noticeably fruitier than the conifer honeydews and quite unlike them.
Miele di melata di Metcalfa
HoneyHQ reference sheet — honeyhq.app/honey/metcalfa-honeydew-honey, record reviewed 2026-08-02. Values describe the honey type, not any one jar; sources are listed at the end.
A honeydew honey that did not exist before 1979, produced from the excretions of an American planthopper that arrived accidentally in Italy and spread across southern Europe. It is a genuinely new honey created by an invasive insect, and Italian beekeepers found themselves with a substantial late-summer crop from a pest nobody wanted.
Flavour and aroma
- Intensity
- Moderate, step 3 of 5, from delicate to intense
- Sweetness
- Moderate, step 2 of 5, from restrained to intense
- Bitterness
- Trace, step 2 of 4, from none to pronounced
- Acidity
- Low, step 1 of 3, from low to bright
- Finish
- Medium, step 2 of 3, from short to longFrom the tasting panel's persistence rating.
Each scale is a set of named steps, not a measurement: the boxes show order, and equal spacing does not mean equal differences.
- Floral and fruity: floral, fruity (present), citrus
- Green and herbal: herbaceous, vegetal
- Warm and cooked: caramel, buttery, malty (present), nutty, molasses and treacle (present)
- Woody and resinous: resinous, woody, smoky
- Spicy and sharp: spicy, phenolic and medicinal
- Earthy and mineral: mineral and saline (present), waxy, animal and barnyard
- Aroma
- dried fig, molasses, warm wood
- Flavour
- fig, dried fruit, malt, light mineral
- Finish
- Medium and malty.
- Flavour character
- Floral and fruity — fruity
- Warm and cooked — malty, molasses and treacle
- Earthy and mineral — mineral and saline
Checked against a trained tasting panel
A trained panel's published description of this honey type exists, and the scales on this page are compared with it below. Panels describe populations of honey from a stated region and period; a single jar can differ.
Reference: Metcalfa pruinosa honeydew honey, 153 samples — Main European unifloral honeys: descriptive sheets; Sensory analysis applied to honey: state of the art.
How this page compares with the panel (5 of 5 agree)
| Scale | This page | Panel | Agrees |
|---|---|---|---|
| Sweetness | Moderate | medium | Yes |
| Acidity | Low | weak | Yes |
| Bitterness | Trace | absent | Yes |
| Crystallisation | Very slow | slow | Yes |
| Finish | Medium | medium | Yes |
“Differs” is kept visible rather than hidden: the panel described honey from one region and period, and a record covering a wider production can honestly sit outside it.
Sourced odour and aroma descriptors
Only what a trained panel or an official honey specification has said, grouped by the International Honey Commission’s odour-and-aroma families. Each entry says which.
Floral – fresh fruit — Flowers and fresh fruit — split by panels into floral and fruity
- Fresh fruit· panel: Trained tasting panel
Warm — Caramel, toffee, malt, cooked sugar — the notes of browning
- Warm· panel: Trained tasting panel
Woody — Wood, resin, dry leaves, spice — the register of chestnut, heather and honeydew
- Woody· panel: Trained tasting panel
Vegetal — Green, grassy, hay and cut-stem notes
- Vegetal· panel: Trained tasting panel
The sources’ own words (0 quoted)
Sources
- Main European unifloral honeys: descriptive sheets — Apidologie, 2004 (10.1051/apido:2004049).
- Sensory analysis applied to honey: state of the art — Apidologie, 2004 (10.1051/apido:2004048).
A specification describes honey sold under one protected name from one region; a panel describes the samples it tasted. Neither promises what a particular jar will taste of.
Colour, texture and crystallisation
- Colour
- Water white0–8 mm
- Extra white8–17 mm
- White17–34 mm
- Extra light amber34–50 mm
- Light amber50–85 mm
- Amber85–114 mm — this honey
- Dark amber114+ mm — this honey
Pfund grades, palest to darkest. Outlined: where this honey usually falls. Swatches are illustrations; real colour depends on depth, container and light. Dark amber to brown, sometimes with a greenish cast.
- Texture
- Thick but pourable; Runny
- Crystallisation
- Very slow, step 1 of 5, from very slow to very fast
Very slow — often still liquid after a year or more.
Very slow, in common with honeydew honeys generally — low glucose and a high oligosaccharide content both suppress crystallisation.
Typical composition
- Moisture
- 15–18.5% (typically 16.5%)
- Fructose
- 30–37% (typically 33%)
- Glucose
- 18.8–31% (typically 23.9%)
- pH
- 4.2–5.7 (typically 5)
- Electrical conductivity
- 1.21–2.17 mS/cm (typically 1.69 mS/cm)
These are typical ranges assembled across published work, not measurements of a specific honey.
What these mean: the sugars and the ratio · moisture · conductivity · how each is measured
The insects behind it
Honeydew honey has three parties: the tree whose sap is the raw material, the sap-feeding insect that excretes the surplus as honeydew, and the bee that collects it. These are the insects documented for this honey, and how each link is known.
Metcalfa pruinosa — citrus flatid planthopper
Planthopper (Flatidae) on a very wide range of trees, shrubs and crops · Italy, Slovenia, France, Türkiye · Named in a reference description
The only honeydew honey the European reference descriptions keep separate from the pooled honeydew class, because its chemistry is distinct: the highest conductivity of any type described, acidity that can exceed the general legal limit, and a high dextrin content.
Checked 2026-09-29 against: Main European unifloral honeys: descriptive sheets (2004); Honeydew producing insects in some forests of Turkey and their potential to produce of honeydew honey (2020). Where honeydew comes from.
What laboratories and tasting panels measured
From the European reference description of Metcalfa pruinosa honeydew honey: 153 authentic samples pooled by the International Honey Commission. These describe a population of honeys, not this or any particular jar — the standard deviations and sample counts are here so that no mean is mistaken for a specification.
| Parameter | Mean | Standard deviation | Limits | Samples |
|---|---|---|---|---|
| Colourmm Pfund | 100.8 | ± 7.5 | 85.9 to 115.7 | 82 |
| Electrical conductivitymS/cm | 1.69 | ± 0.24 | 1.21 to 2.17 | 104 |
| Specific rotation[α]D20 | 17.5 | ± 6.5 | 4.5 to 30 | 83 |
| pHpH | 5 | ± 0.3 | 4.5 to 5.7 | 97 |
| Free aciditymeq/kg | 37.2 | ± 6.6 | 24.5 to 50.3 | 116 |
| Lactonesmeq/kg | 4 | ± 1.2 | 1.5 to 6.4 | 116 |
| Total aciditymeq/kg | 41.2 | ± 7 | 30 to 55.1 | 116 |
| Waterg/100 g | 15.9 | ± 0.7 | 14.4 to 17.4 | 41 |
| Diastase activitySchade units (DN) | 39.3 | ± 7.9 | 23.5 to 52.7 | 108 |
| Invertase activityU/kg | 172 | ± 21.4 | 135.9 to 215.1 | 45 |
| Prolinemg/kg | 515 | ± 173 | 254 to 860 | 27 |
| Fructoseg/100 g | 31.6 | ± 3.2 | 25.3 to 37.9 | 112 |
| Glucoseg/100 g | 23.9 | ± 2.7 | 18.8 to 29 | 112 |
| Sucroseg/100 g | 0.1 | ± 0.1 | 0 to 0.3 | 112 |
| Fructose + glucoseg/100 g | 55.5 | ± 4.5 | 46.6 to 64.3 | 112 |
| Fructose ÷ glucoseratio | 1.34 | ± 0.18 | 0.98 to 1.69 | 112 |
| Glucose ÷ waterratio | 1.51 | ± 0.18 | 1.22 to 1.86 | 41 |
How a trained panel describes it
- Colour
- Very dark; normal honey colour
- Odour
- Medium — Woody, Floral – fresh fruit (fruity), Warm, Vegetal
- Aroma in the mouth
- Medium — Woody, Floral – fresh fruit (fruity), Warm, Vegetal
- Taste
- Sweetness medium; acidity weak; bitterness absent
- Persistence
- Medium
- Other sensations
- Sometimes astringent
- Crystallisation
- Slow
It is very commonly of a very thick consistency, due to a low water content.
The family names are a trained-panel vocabulary: woody means wood, resin, dry leaves, spice — the register of chestnut, heather and honeydew; floral – fresh fruit means flowers and fresh fruit — split by panels into floral and fruity; warm means caramel, toffee, malt, cooked sugar — the notes of browning; vegetal means green, grassy, hay and cut-stem notes. How panels taste honey.
What each measurement tells you
- Colour
- Depth of colour on the Pfund scale — 0 is water-white, above 114 is dark amber. Tracks minerals and phenolic compounds, and darkens with heat and age.
- Electrical conductivity
- How well a honey solution carries current, which rises with its mineral and acid content. The main official test separating honeydew and chestnut honeys (high) from most blossom honeys (low).
- Specific rotation
- The direction in which the sugars turn polarised light. Fructose turns it left, so blossom honeys read negative; honeydew honeys carry oligosaccharides that turn it right and read positive.
- pH
- Acidity as a logarithmic scale. Honey is always acidic; honeydew and chestnut honeys sit highest because their minerals buffer the acids.
- Free acidity
- The acid present as free acid, mostly gluconic acid made by the bee enzyme glucose oxidase. Rises with fermentation, which is why it has a legal ceiling.
- Lactones
- Acid held in lactone form — the reserve that free-acidity titration does not see. Added to free acidity to give total acidity.
- Total acidity
- Free acidity plus lactones.
- Water
- Moisture content. Decides whether a honey can ferment and how fast it pours; set by the nectar, the weather and how long the bees ripened it.
- Diastase activity
- Activity of the starch-digesting enzyme the bees add. Falls with heating and storage, so a low value in a honey that should be high suggests heat or age — but some honeys, citrus and acacia among them, are naturally low.
- Invertase activity
- Activity of the bee enzyme that splits sucrose into glucose and fructose. More heat-sensitive than diastase, and a sharper indicator of freshness and gentle handling.
- Proline
- The main free amino acid, mostly from the bees' own secretions. A low value is one signal of sugar-syrup dilution or of an unripe honey.
- Fructose
- The sweeter, more soluble of the two main sugars. Honeys rich in it stay liquid.
- Glucose
- The less soluble of the two main sugars and the one that crystallises. Honeys rich in it set quickly and finely.
- Sucrose
- Ordinary sugar, mostly split by the bees during ripening. A few honeys — lavender, acacia, citrus — keep more of it naturally, which is why their legal limits are higher.
- Fructose + glucose
- The two main sugars together. Lower in honeydew honeys, which carry more oligosaccharides — melezitose, erlose and others — made by the insects that produced the honeydew.
- Fructose ÷ glucose
- The single best predictor of whether a honey crystallises. Below about 1.1 it sets quickly; above about 1.3 it tends to stay liquid for a long time.
- Glucose ÷ water
- How much glucose there is for each part of water. Above about 2.1 the solution is supersaturated enough to crystallise fast; below about 1.7 it crystallises slowly or not at all.
Population: Authentic unifloral honeys produced in 21 countries of the European geographical area, analysed by 20 laboratories in 11 countries of the International Honey Commission working group formed in 1998; published 2004.
Electrical conductivity and specific rotation are expressed on honey dry matter; every other value on the honey as it is.
Diastase and invertase are given for fresh honeys only; both fall with age and heating.
The limits are the source's 95% confidence limits, replaced by the observed minimum or maximum wherever the limit would have fallen outside the data.
Free acidity in this honey can exceed the 50 meq/kg limit the EU directive sets for honey generally; its sugar spectrum also includes a high dextrin content.
Checked 2026-09-29 against: Main European unifloral honeys: descriptive sheets (2004); Sensory analysis applied to honey: state of the art (2004). Descriptive sheet, pp. S80–S81.
Where it comes from
- Floral source
- Honeydew excreted by Metcalfa pruinosa, a North American planthopper feeding on a very wide range of trees and shrubs — including grapevine, hazel, ash, robinia and many garden plants.
- Origins
- Italy principally, and increasingly Slovenia, Croatia, France, Spain and Hungary as the insect has spread.
- Origin pages
Resolved from both directions — origins this honey names, and origins that name it.
- Typical harvest
- July to September (northern hemisphere)
Late summer, and the timing depends on planthopper populations rather than on any flowering.
A typical window for the honey type, HoneyHQ synthesis — not a calendar for any one place.
- The bees
- Honey bees collect the honeydew from leaves and stems. Because Metcalfa feeds on such a wide range of host plants, the honey is not tied to any one tree, which is unusual for a honeydew and makes it available in landscapes with no forest at all.
- Usual processing
- Raw, Coarsely strained, Spun (centrifugally extracted)
Yield tracks planthopper populations, which are large in warm years. Because the insect is a pest of vineyards and orchards, insecticide programmes directly affect the crop — an unusually direct conflict.
Sourced periods for this honey
Read from a source for the place named, and kept apart from the typical windows elsewhere on HoneyHQ, which are synthesis. Flowering, nectar flow and harvest are different periods.
Honeydew flow: Citrus flatid planthopper on a very wide range of trees, shrubs and crops — June–August
Italy · northern hemisphere · Season words; months derived · Peer-reviewed study
Summer.
An introduced planthopper on a very wide range of trees, shrubs and crops.
Source: Main European unifloral honeys: descriptive sheets. Checked 2026-10-31.
| Phase | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flowering | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way |
| Nectar flow | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way |
| Honeydew flow | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way |
| Harvest | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way | Not documented either way |
● documented as happening, from a period given in months. – not documented either way: no source read here says, which is not the same as nothing happening. Periods given only in season words or as an onset are listed above but leave their months dashed.
What to do with it
Its low sweetness and fig note make it a natural cheese honey, and it works in baking where a fruitier depth is wanted.
At the tableWith cheeseDrizzlingBakingDesserts
Pairings
- Aged pecorino and parmesanClassic
The Italian pairing; fig and hard sheep cheese is a combination that predates the honey by centuries.
- Fresh figs and walnuts
The honey already tastes of figs, which makes this straightforward.
- Panforte and dense fruit cakes
Dried fruit against dried fruit.
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
Similar honeys and substitutes
Three different questions with different answers: a honey that tastes alike can behave differently in a recipe, and the same set texture says nothing about flavour. Each list is chosen from the recorded fields that matter to its question — and, where tasting panels or specifications described both honeys, the terms they share — and every suggestion says which, and what will be different. Compare it side by side or build a tasting flight.
Tastes similar
If you like this honey, try
- Tamarisk honey
Similar because
- Both mineral, malty and molasses
- Close in intensity — pronounced
- Shares its bitterness
- Sycamore honeydew honey
Similar because
- Both malty, mineral and molasses
- Same intensity — moderate
- Shares its bitterness
- Beech honeydew honey
Similar because
- Both malty, mineral and molasses
- Close in intensity — pronounced
- Shares its bitterness
Cooks similarly
If it is not available for a recipe, use
- Greek fir honey
Similar because
- Same intensity (moderate), so it shows through a recipe to the same degree
- Recorded for the same uses: at the table, drizzling and with cheese
- Sycamore honeydew honey
Similar because
- Same intensity (moderate), so it shows through a recipe to the same degree
- Recorded for the same uses: at the table, with cheese and baking
- Orange blossom honey
Similar because
- Same intensity (moderate), so it shows through a recipe to the same degree
- Recorded for the same uses: at the table, drizzling and desserts
Different: noticeably paler — expect less colour and a lighter taste in a bake; a nectar honey rather than a honeydew one
Same texture
For the same feel in the jar, try
- Greek fir honey
Similar because
- Also sold thick but pourable and runny
- Crystallises at the same very slow rate
- Same variable crystal when it sets
- Beech honeydew honey
Similar because
- Also sold thick but pourable and runny
- Crystallises at the same very slow rate
- Same variable crystal when it sets
Different: stronger flavour (intensity: pronounced)
- Vosges fir honey
Similar because
- Also sold thick but pourable and runny
- Crystallises at the same very slow rate
- Same variable crystal when it sets
Different: stronger flavour (intensity: pronounced)
History and traditional use
Metcalfa pruinosa was first recorded in Europe near Treviso in 1979, almost certainly arriving with imported plant material. It spread rapidly across Italy and beyond. Within a decade beekeepers had a new honey, which is a rare instance of a biological invasion producing a marketable product rather than only costs.
Sources
- HoneyHQ editorial synthesis — HEKNO Ltd · HoneyHQ synthesis
- Council Directive 2001/110/EC relating to honey — Council of the European Union (2001) · Regulatory guidance Link
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.
- The best honey for cheeseHoney and cheese work because sweetness, salt and fat balance each other. The pairing fails when the honey is too mild to register or so strong it flattens the cheese.
- Fruity honeysA small group of honeys that taste recognisably of fruit — sometimes of the fruit their own plant produces, which is a coincidence worth understanding.
- Dark honeysDark honeys are higher in minerals and phenolic compounds than pale ones, which makes them stronger, more savoury and — in laboratory terms though not in clinical ones — more antioxidant-rich.
- Where honeydew comes from: the trees, the insects and the honeyForest honey is not made from flowers. It is made from the sugary excretion of aphids, scale insects and planthoppers feeding on tree sap — and which insect it was matters more to the honey than which tree.
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?