Honey that is sugared is the real one
The lumpy honey in the jar is not spoiled — it's proof that no one heated it above 40°C. Here's how to return it to liquid without losing its flavor.
A jar returned to the store, with the explanation "it spoiled, hardened", is a common scenehoney sellers at the market. The real problem is the other way around: honey that remains transparent and liquid for months, as a rule, has gone through filtering and mild heating, which has deprived it of the very thing for which it is bought from the market, and not half.
Crystallization is chemistry, not breakdown. Honey is a supersaturated solution of two sugars, glucose and fructose, in a little water. Glucose dissolves less and over time begins to come out of the solution in the form of tiny crystals — the same process as when salt appears in a saturated saline solution at the bottom of a glass. The higher the ratio of glucose to fructose, the faster and coarser the crystallization.
Speed by variety
The ratio of those two sugars depends on the plant from which the bee collected the nectar, so the speed of sugaring is practically a signature of the variety. We wrote about the differences between the three most common varieties on the domestic market in more detail in the textacacia, linden and chestnut: three honeys and one fraud, and the table below shows why they behave that way.
| Sort of | Glucose/fructose ratio | Time to crystallization |
|---|---|---|
| acacia | low, fructose dominates | 12–24 months, stays liquid the longest |
| Linden tree | medium | 4–8 months |
| Meadow/polyfloral | medium-high | 2–4 months |
| Sunflower | high, glucose dominates | 2–5 weeks |
| Canola oil | at most, glucose dominates | 1–3 weeks, often still compacted into a honeycomb |
Rapeseed honey crystallizes so quickly that beekeepers must remove it from the hive within a week of filling the comb, otherwise it curdles before it reaches the centrifuge. Acacia honey, on the other hand, can remain completely liquid even after a year and a half — which is the reason why it is most often adulterated with sugar syrup, because the buyer perceives its liquidness as normal.
How to return it to liquid and not destroy it
Place the jar, open or closed, in a bowl of warm water whose temperature does not exceed 40°C, and change the water every fifteen minutes until the crystals melt. Above that limit, the breakdown of invertase, the enzyme that distinguishes honey from sugar syrup, begins and creates hydroxymethylfurfural (HMF) — a compound that laboratories use precisely to detect overheated or adulterated honey. The microwave is never an option: the heating is uneven, so some of the honey exceeds 50 or 60°C before the rest has even melted.
Honey is a supersaturated solution of two sugars, glucose and fructose, in a little water.
For daily use, it is simpler to keep the jar at room temperature and eat honey with a spoon and crystallized — the taste and nutritional value remain intact, only the texture changes, which is thicker and a bit gritty. Who still wants a liquid consistency for tea or dressing, a warm water bath is the only safe way, and half an hour's patience is a price worth paying.
Why is overheating controlled at all?
HMF, hydroxymethylfurfural, is produced by the breakdown of fructose at high temperature and is not dangerous in itself, but it is a reliable indicator of how much heat the honey has been exposed to—either intentionally, for faster packaging and a better appearance on the shelf, or accidentally, during transport in a hot truck. Fresh, raw honey has HMF below 15 milligrams per kilogram; honey overheated above 60°C, or old and poorly stored, easily exceeds 40 to 50. That's why laboratories that check the origin of honey first measure that number, before even looking at the sugar or pollen content.
Invertase, an enzyme that bees add to nectar to break down sucrose into glucose and fructose, breaks down in a similar way — it loses its activity after only a few minutes at 50°C, and disappears completely above 70°C. The presence of invertase in unheated honey is the reason why raw honey is recommended as easier to digest than white sugar: the work that would otherwise have to be done by the body, the honey has already done on its own in the hive.
Questions & answers
short and to the point- Why is honey sugared?
- Because it is a supersaturated solution of glucose and fructose; glucose dissolves less and crystallizes over time, faster in varieties with more glucose such as rapeseed.
- How to melt hardened honey without losing its quality?
- In a water bath up to 40°C, with occasional water changes, until the crystals melt; above that temperature, the enzyme invertase breaks down and the content of HMF increases.
- Which honey hardens the slowest?
- Acacia, because it has the highest proportion of fructose in relation to glucose — it can remain liquid for a year and a half after boiling.
