Crystallized honey is not spoiled; warming an open jar in hot, not boiling, water can dissolve the sugar crystals while helping preserve its color and flavor

People usually think of honey as spoiled when it appears thick, cloudy, or grainy, but in fact, its crystallization is part of the process of honey production. Over time, honey may crystallize due to sugar crystallization. Penn State Extension advises that crystallized honey can be returned to its liquid state by placing the jar in hot water. This hot water method helps dissolve the sugar without altering the honey's color or flavor. The tip highlights that there is a difference between appearance changes and food spoilage. Unlike many other pantry staples, properly stored honey can last for a long time, making crystallization simply a cosmetic change, not the reason to toss it away.

Why does honey crystallize?

Honey consists mostly of two naturally produced sugars, which are fructose and glucose. In contrast to fructose, which has high solubility in water, glucose is less stable in honey and can begin separating from the solution. The speed at which this process occurs depends on several factors, including the origins of bees’ flowers, the ratio of fructose to glucose, the temperature of storage, and the presence of pollen among other natural ingredients. Some types of honey crystallize within weeks, while others remain liquid for months or even years. This does not matter for the quality or freshness of honey; rather, it is a feature of honey.


The property of honey to crystallize is affected by the type of flowers from which nectar was obtained by bees. Purdue Extension explains that honey with a higher percentage of glucose tends to crystallize faster than honey rich in fructose. Honey that is filtered thoroughly takes a longer time to crystallize because of the lack of particles that stimulate the process of crystallization. On the other hand, honey that is raw takes less time to crystallize due to the pollen and other natural substances present in it. These aspects indicate the possible dissimilarity of texture between two jars of honey obtained at the same moment and stored in similar conditions.

Restoring honey without damaging it

Some people tend to melt their crystallized honey in a microwave oven or using excessive heat. Food experts recommend refraining from such practices. Experts from Penn State recommend that it is better to use warm, not boiling, water for the purpose of slowly dissolving the sugar crystals back into the honey. Gentle warming helps dissolve the crystals while preserving the honey's color and flavor. The warming method may take time depending on how much crystallization has occurred. Stirring also helps heat get distributed evenly throughout the honey and helps to dissolve the honey crystals.

Crystals do not mean the honey is spoiled

Purdue Extension claims that crystallization takes place naturally, caused by the composition of honey, and not because of any bacteria, molds, or contaminants. In fact, some people consider the process of crystallization as proof that honey is not processed too much because elements like pollen, which is naturally present in honey, encourage the formation of crystals too. Proper storage of honey also plays an important role in the time it takes for crystals to form. Storing honey in a closed container at room temperature generally slows down crystallization, but when it's refrigerated, the process speeds up as cooler temperatures encourage glucose crystals to form.

Although crystallization modifies the appearance of honey, it does not lessen its usefulness in the kitchen. It is necessary to understand the reason for crystallization, since it will help to minimize the amount of food waste. Food preservation is a simple reminder that appearance does not always tell the full story and is often deceiving, but when you know the actual reason, natural changes can often be reversed without sacrificing quality.