How to Store Raw Honey (And Why It Crystallises)

You open a jar of raw honey you bought two months ago and find it's turned thick and grainy. Your first instinct might be that something has gone wrong. It hasn't. Crystallisation is one of the best signs that your honey is genuinely raw.

Why Honey Crystallises

Honey is a supersaturated sugar solution — it contains more sugar than water can normally hold in dissolved form. Over time, glucose molecules naturally separate from the water and form crystals. This is simple physics, not spoilage.

The speed of crystallisation depends on the glucose-to-fructose ratio. Honeys with higher glucose content (like clover or wildflower) crystallise faster. Honeys with higher fructose content (like acacia) stay liquid longer. But all genuinely raw honey will crystallise eventually.

Why Supermarket Honey Doesn't Crystallise

Commercial honey stays liquid because it's been heated to 70°C and ultra-filtered. This dissolves all seed crystals and removes the pollen grains that act as nucleation points. The result: permanently liquid honey — but with none of the enzymes, pollen, or beneficial compounds that made it worth eating in the first place.

How to De-crystallise Without Damaging It

If you prefer liquid honey, place the jar in a bowl of warm water (no hotter than 40°C — about the temperature of a warm bath). Leave it for 20–30 minutes, stirring occasionally. The crystals will dissolve gently without destroying the enzymes. Never microwave raw honey — the uneven heating will create hot spots that denature the proteins and enzymes instantly.

Storage Best Practices

• Room temperature — a cool, dark cupboard is ideal. Honey stored between 18–24°C will crystallise slowly and evenly.
• Avoid the fridge — temperatures between 10–15°C accelerate crystallisation into a hard, gritty texture. Either room temperature or freezer (below -20°C, which prevents crystallisation entirely).
• Keep the lid tight — honey is hygroscopic and will absorb moisture from the air, which can eventually cause fermentation if the water content rises above 20%.
• Clean spoon every time — introducing water or food particles into the jar can trigger fermentation.

Does Honey Expire?

Archaeologists have found 3,000-year-old honey in Egyptian tombs that was still edible. Properly stored raw honey has an essentially indefinite shelf life. Its low water content, low pH, and natural hydrogen peroxide production create an environment where bacteria simply cannot survive.

Crystallised honey isn't old honey or bad honey. It's real honey doing what real honey does.