How to Store Chocolate: Temperature, Bloom and Shelf Life

Ours, if you want two bars that keep well in a cupboard:

The milk bar's sugars occur naturally in the milk. The dark bar's come from the cocoa. Nothing is added on top of either.

Why does chocolate melt in your pocket?

Because a pocket is warmer than chocolate can take. The melting point of chocolate falls between 86 and 90°F, or 30 to 32°C, while the human body runs at 98.6°F, according to the US Library of Congress. A jacket pocket or a car dashboard sits well above that line.

Cocoa butter is doing the work here. Tempered properly, it sets into a crystal form that melts near body temperature, which is what gives a bar its snap in the hand and its melt in the mouth. It is also why a warm room undoes a bar so quickly.

What temperature should chocolate be stored at?

Between 14 and 21°C, dry and out of direct sunlight. That is not a rule of thumb. It is the line on our own storage sheet for the two 85 g bars above: keep in a cool, dry place, away from odours and protected from direct sunlight, ideal 14 to 21°C.

Humidity matters as much as heat, which is why several of our lines carry a figure for it. The coated chocolate buttons ask for the original packaging at 16 to 20°C with relative humidity under 70 percent. Our chocolate spreads ask for an odour free environment at 17 to 23°C, protected from air and light.

Different products, different numbers. Here is what our own storage sheets say, line by line.

Product	On the storage sheet	Shelf life
No added sugar milk and dark chocolate bars 85 g	Cool, dry, away from odours, out of direct sunlight. Ideal 14 to 21°C	24 months
No added sugar coated milk chocolate buttons 40 g	Original packaging, 16 to 20°C, humidity under 70 percent	24 months
No added sugar hazelnut and chocolate spread 350 g	Odour free, protected from air and light, 17 to 23°C	16 months
Sugar free lemon and cream sweets 75 g	Cool and dry, ideally 15°C, 25°C maximum	24 months
Sugar free gummy bears 75 g	Cool and dry, 20 to 25°C, humidity 55 to 65 percent	24 months
No added sugar apricot muesli bar 30 g	Dry, up to 25°C	15 months
No added sugar strawberry jam with chia seeds 230 g	Dry, out of direct sunlight, refrigerate once opened	24 months

Every no added sugar product above contains naturally occurring sugars from its own ingredients: milk, fruit or cocoa. None of them has sugar added on top.

Should chocolate go in the fridge?

Only when the room is losing. GOV.UK puts a domestic fridge at 5°C or below, far under the 14 to 21°C our 85 g chocolate bars ask for, and a fridge holds the smell of everything else on the shelf. Take a cold bar into a warm kitchen and moisture settles on the surface, which dulls the finish.

In a heatwave the fridge still beats a 30°C worktop. Seal the bar in an airtight box first. Then let it come back to room temperature inside the box before you open it.

The box is the part people skip.

Why does chocolate turn pale, and can you still eat it?

That chalky grey film has a name. It is fat bloom, and the Institute of Food Technologists sets out where it comes from.

The same source notes that chocolate has a long shelf life and is safe to eat, though a badly stored bar may not taste the same or keep the same creamy texture. So the fix is a steady spot rather than a cold one. A cupboard that sits at 16°C all week treats chocolate better than a fridge it travels in and out of.

How long does chocolate keep?

Our 85 g milk and dark bars carry a 24 month shelf life. The chocolate hazelnut spreads run to 16 months and the muesli bars to 15. Held in the range on the storage sheet, a bar will still eat as it should at the end of that window. Left on a sunny shelf, it will not.

The date on a chocolate wrapper is a best before date rather than a use by date, and the two are not the same thing.

A best before date, on the same GOV.UK guidance, marks the point where quality starts to drop rather than safety. Chocolate carries one, not a use by date.

Maltitol is what sweetens these bars. It is a polyol, a sweetener used in place of sugar, and there is a full explainer on maltitol if you want the detail.

Frequently asked questions

Can you freeze chocolate?

You can, but it is rarely worth it. Freezing takes a bar far below the 14 to 21°C our 85 g bars ask for, and the journey back up brings condensation onto the surface. If you do freeze it, wrap it airtight, then let it reach room temperature still sealed.

Is chocolate with a white film still good?

The pale film is fat bloom, which the Institute of Food Technologists attributes to storage at high temperatures or to extreme swings in temperature. The same source says chocolate is safe to eat and long lasting, though a badly stored bar may lose some of its taste and texture.

How should chocolate be stored in summer?

Move it to the coolest, darkest cupboard you have, away from any window that catches afternoon sun. Our 85 g bars ask for 14 to 21°C. If the kitchen holds above 25°C for days, an airtight box in the fridge is the better option, opened only once the box has come back to room temperature.

If you buy chocolate in September to give away in December, the cupboard you choose now decides how it arrives.

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