4-5 YRBLOOM IS SAFEMORALEWorks without power
Quick facts
- Real shelf life4 to 5 years
- Label date says2 years
- Best storage
- Sealed
- cool and dark
- under 70°F
- Watch forAn off smell; bloom is safe
Where this sits on the food shopping list
Dark chocolate, 70 percent cocoa and up, is sugar, cocoa solids and cocoa butter with almost no water and no milk, which is why it keeps 4 to 5 years stored cool against a label of 2 and why it is the chocolate in the food store and the bug-out bag. It's 170 calories an ounce, needs nothing, and does something for morale on a bad night that the buckets cannot. The one thing that happens to it in storage is bloom, and bloom is harmless.
Which to buy
Bars of 70 percent or higher with a short ingredient list: cocoa, sugar, cocoa butter, maybe vanilla and lecithin. The higher the cocoa, the less sugar and the longer it keeps. Skip anything with nuts, fillings, caramel or milk. Buy sealed bars after the holidays when they are cheap and write the date on the box. Cocoa powder, which keeps indefinitely, is the backup for cooking.
How long it really lasts
By how it is kept
| Form | Label says | Real, stored well |
|---|---|---|
| Dark chocolate, sealed, cool and dark | 2 years | 4 to 5 years at full quality; edible long after |
| Dark chocolate, frozen, wrapped tight | Years; thaw in the fridge still sealed | |
| Dark chocolate, opened | Months in a sealed jar before it goes dull | |
| Dark chocolate chips | 1 to 2 years | As the bar |

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What to store, how much of it for one person for one month, and how long it keeps. One page with checkboxes, built from the Survival Foods field guide. Print it, multiply by your people and months, and take it to the store.
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How to store it
Sealed in its wrapper inside a jar or a bag, in the coolest, darkest cupboard in the house, under 70°F and away from anything with a smell; chocolate absorbs odors. It melts at about body temperature, so a summer without air conditioning means the coolest room, the cooler, or the fridge in a sealed bag. The freezer keeps it for years wrapped tight; thaw it sealed in the fridge so condensation does not land on it and make sugar bloom.
How to tell it has turned
The white or gray film is bloom, cocoa butter or sugar that came to the surface after a temperature or moisture change; the chocolate is fine and melts back to normal. A dull surface and a grainy or crumbly bite are age. The chocolate is done when it smells off or rancid, which is rare in plain dark chocolate, or shows mold, which only happens if it got wet.
Bloom, a dull surface, a grainy old bar, bars years past the date that smell of chocolate.
A rancid or off smell, or mold.
How much, and how to use it
One bar in every bag and a box in the store, rotated through the year; an ounce a day is a 170 calorie ration and a reason to get up. Bloomed or grainy bars melt into hot chocolate with powdered milk and sugar, into sauce, and into baking. A square of dark chocolate with the instant coffee is the morning in a long outage.
When the power goes out
Heat is the only enemy. Move the chocolate to the coolest place in the house and keep it sealed; a bar that melted and reset is bloomed, not spoiled.
Shelf-life figures are from the Survival Foods field guide; fridge, freezer and pantry times are from the USDA cold and pantry storage charts. Run the look, smell, taste check before eating anything past its date.
Questions this answers
Tap a question for the short answer.
How long does dark chocolate last?
Four to five years stored cool and dark against a label of 2, and edible long after. Frozen and wrapped tight, years. Opened, months in a sealed jar before it goes dull.
How do I store dark chocolate long term?
Sealed in its wrapper inside a jar, under 70°F, dark and away from smells; the freezer for years, thawed sealed in the fridge.
How do I tell if dark chocolate has gone bad?
An off or rancid smell, or mold, which only happens if it got wet. The white film is bloom and is harmless; a grainy bite is age.
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