At a glance
Acacia honey
Robinia pseudoacacia · black locust
Colour
Very pale, almost whiteup to 35 mm Pfund
Aroma
Faint floral aromaflour-like notes on the palate
Taste
Clean sweetnessno other pronounced tastes
Crystallisation
Slow, fine crystallisationF/G ratio at least 1.5
Season
Late springbrief flowering period
Region
Basque Countrythe only profile in the guide with a single Spanish region
Pollen reference
20%Robinia pseudoacacia pollen
Electrical conductivity
up to 0.30 mS/cmamong the lowest, like rosemary honey
Acacia honey ranks among the palest honeys in the Iberian guide and is exceptionally slow to crystallise. Spanish-grown acacia honey is hard to find. Even the tree behind its name can come as a surprise.
All over the world, acacia is a familiar example of a pale, mild honey. It is nearly white, with a faint floral aroma and a clean sweetness. It is widely sold in Spain, yet the Iberian guide lists just one Spanish region for its production.
Reading and tasting acacia honey
This Spanish-language field guide compares botanical origin, tasting and laboratory findings. Use the profile together with the traceability of the lot.
Check the harvest area
- Record the declared origin and lot before comparing jars.
- Consider colour, pollen and sugars alongside fluidity.
Where is acacia honey produced in Spain?
Most of the guide’s 43 profiles cover a broad area, such as both central plateaus, the north-west of the peninsula, or Andalusia and the coast. For acacia, its authors give one place name.
The Basque Country.
Acacia is the only profile in this guide that identifies a single autonomous community as the Spanish production area. A Spanish monofloral acacia honey is a rare find.
An imported acacia honey can be quite genuine. Central and eastern Europe are major producing regions and supply much of the honey sold elsewhere. The country of harvest on the label is a better guide to origin than the country where you bought it. See our guide to honey labelling in Spain.
The tree behind the name
The bees forage on Robinia pseudoacacia, known as black locust or false acacia. This North American member of the pea family was planted in Europe for ornament and to stabilise slopes. It is now naturalised in many areas. The tree belongs to the genus Robinia. “Acacia honey” is the long-established trade name.
The guide describes a faint flour-like note associated with the pea family. A similar note sometimes appears in rosemary honey (in Spanish) when bees have also visited legumes.
Colour
Very pale, almost white, with an upper limit of 35 mm Pfund in the guide. Acacia and rosemary occupy the lightest part of the Iberian colour scale.
Acacia honey on the Pfund scale
Acacia falls within the three palest bands, alongside rosemary. Amber would be too dark for this profile. The colours on screen are illustrative. A laboratory measures the actual value.
Aroma, taste and texture
Sensory profile
Our interpretation of the descriptions in the Guía de mieles monoflorales ibéricas. This is one of the mildest sensory profiles in the series.
Aroma
A delicate floral aroma fades quickly. The light flour-like note is often easier to detect as the aroma rises to the nose during tasting. Rosemary is similarly subtle.
Taste
Sweetness dominates, with no pronounced acidity, bitterness or saltiness. This restrained taste makes acacia a popular choice for sweetening food without masking its flavour.
Slow crystallisation and the fructose-to-glucose ratio
When crystals form, they are usually fine and develop slowly. Acacia is the one honey for which the Iberian guide specifies a minimum fructose-to-glucose (F/G) ratio of 1.5.
Glucose is the sugar that readily forms crystals in honey. A high proportion of fructose in relation to glucose helps explain why acacia honey can stay liquid for one or even two years. Storage conditions also matter. See why honey crystallises.
A jar that remains liquid for a long time is entirely consistent with the profile.
Interpreting the laboratory profile
| Parameter | Reference in the guide | How to interpret it |
|---|---|---|
| Colour | up to 35 mm Pfund | Very pale, often almost white. Amber falls outside the profile. |
| Moisture | up to 18% | Moisture above the guide value increases the risk of fermentation. The general EU limit for blossom honey is 20%. |
| Fructose and glucose combined | at least 60% | A characteristic of blossom honey. This figure on its own cannot exclude added syrup. |
| Sucrose | up to 10% | Twice the usual maximum, as for citrus and eucalyptus, because their nectars can be rich in sucrose. |
| Electrical conductivity | up to 0.30 mS/cm | Among the lowest values in the guide, alongside rosemary. This fits acacia’s low mineral content. |
| Free acidity | up to 50 meq/kg | Can rise with fermentation or extended storage. |
| HMF | up to 40 mg/kg | Tends to rise with heat and time. Levels are usually low in freshly harvested honey. |
| Diastase activity | at least 8 Schade units | An enzyme contributed by the bee, sensitive to heat. EU rules provide a minimum of 3 for honeys with naturally low enzyme content when HMF is no more than 15 mg/kg. |
| Fructose-to-glucose ratio (F/G) | at least 1.5 | The additional parameter used in this profile. It compares fructose with glucose and helps explain why acacia honey stays liquid for so long. |
| Robinia pollen | at least 20% | Intermediate pollen representation. This is a proportion of the grains counted. |
Reference ranges from the Guía de mieles monoflorales ibéricas, fourth edition (2023). These characterise the variety. Spanish statutory limits are set by Royal Decree 1049/2003 as amended by Royal Decree 68/2025, including a general maximum of 20% moisture and 40 mg/kg HMF, subject to the exceptions in the legislation.
What other pollen occurs in acacia honey?
- Other meadow legumes
- Daisy family (Asteraceae)
- Some mint-family plants
This relatively short list fits its growing area in Spain, where Atlantic meadows supply much of the accompanying flora.
Growing areas and harvest season
In the Basque Country, black locust flowers in late spring. Its long white clusters open almost at once and the flow may be over in two or three weeks. Heavy rain during that short period can spoil the blossom, so yields vary considerably from year to year.
Acacia honey flow
Flowering and harvest
The guide places it in late spring. Black locust flowers abundantly, but the flow can be over in just a few weeks.
How to recognise acacia honey
- 1Look for a very pale colour. The guide sets a limit of 35 mm Pfund. An amber-coloured sample falls outside that profile.
- 2Expect a mild aroma. A faint floral scent fades quickly. An intense aroma calls for a closer look at the origin.
- 3Taste for clean sweetness. Pronounced acidity, bitterness or saltiness would suggest another floral contribution.
- 4Long-lasting fluidity is typical. With a fructose-to-glucose ratio of 1.5 or higher, some jars stay liquid for a year or two.
- 5Read the country of harvest. The Iberian guide lists the Basque Country. Spanish acacia honey is relatively scarce.
For a broader set of checks, see how to assess the quality of a honey.
Composition and health claims
European Union rules govern health claims on food. The honey’s fructose content does not justify claims that it aids digestion or is specially suited to people with diabetes. Its pale colour and mild taste are sensory qualities.
The useful differences show up in analysis, tasting and cooking.
- It is one of the slowest honeys in the guide to crystallise. Its specified minimum F/G ratio is 1.5.
- Its mild sweetness leaves other flavours intact. Heather and chestnut honey have a much stronger influence on the taste of a recipe.
- Its maximum conductivity of 0.30 mS/cm is roughly one third of the guide’s reference value for holm oak honeydew honey. This is consistent with its low mineral content.
- It works well in herbal tea, delicate pastries, yoghurt and drinks where a stronger honey would dominate.
Who should take particular care?
Children under 12 months. Do not give honey to infants under one year. It can contain spores of Clostridium botulinum that may cause infant botulism. This applies to all types of honey.
Diabetes. a high fructose content does not make this honey a special choice for people with diabetes. Its sugars still count towards carbohydrate intake.
Known allergy. Anyone with a diagnosed allergy to honey or bee products should consult their clinician if unsure what is safe for them.
Frequently asked questions
Is acacia honey produced in Spain?
Yes, in small quantities. The Iberian guide lists the Basque Countryas its Spanish production area. This is the only one of its 43 profiles to identify just one Spanish region. Central and eastern Europe supply much of the acacia honey available in shops. Check the country of harvest on the label.
Does acacia honey come from an Acacia tree?
The Spanish and European product sold under this name comes from Robinia pseudoacacia, black locust, a North American member of the pea family. Botanically, the tree belongs to Robinia rather than Acacia. Acacia honey is its established trade name.
Why is acacia honey so slow to crystallise?
Fructose is abundant in relation to glucose, the sugar that usually crystallises in honey. The guide sets a minimum fructose-to-glucose ratio of 1.5. Some jars remain liquid for a year or even two.
Does the fructose make it suitable for people with diabetes?
Acacia honey still contributes sugars. Its fructose content is no basis for marketing it as a special food for people with diabetes. Count its carbohydrate content as you would with other honeys.
What does acacia honey taste like?
The taste is mild and sweet. The delicate, short-lived floral aroma can include a faint flour-like note that is easiest to pick up on the palate.
Who should take particular care?
Never give honey to a baby under 12 months because of the risk of infant botulism. If you have diabetes, count its sugars in your diet. Anyone with a diagnosed allergy to hive products should seek individual medical advice.
Where to buy acacia honey
We specialise in honeys from Spanish beekeepers. Spanish acacia honey is a small, irregular crop and does not form part of our own range. Ask a beekeeper in the Basque Country if you would like to try a local harvest. For imported honey, check the declared country of harvest.
If you want a pale Spanish honey with a similarly mild flavour, our closest match is raw rosemary honey. You can also explore our raw honeys harvested in Spain.
Sources
The reference ranges come from the fourth edition (June 2023) of the Guía de mieles monoflorales ibéricas by J. Orantes, F. Gonell, C. Torres and A. Gómez-Pajuelo, published by Laboratorios Apinevada and Pajuelo Consultores Apícolas. Their work draws on a series reaching back to 1980 and more than 3,600 analyses a year across the two laboratories. The printed guide in Spanish is available in our shop.
This profile is part of our guide to Iberian monofloral honeys. Compare acacia with rosemary honey (in Spanish) for colour and delicacy, or with holm oak honeydew honey and heather honey for darker profiles.
