Does Sugar expire?
Does Sugar expire?
No. Sugar is itself a preservative — at that concentration nothing can grow in it.
Indefinite
Granulated sugar has almost no free water, and micro-organisms need free water, so a bag of sugar is hostile to everything that would otherwise spoil it. What changes is texture: white sugar sets into a brick if it takes up moisture, and brown sugar dries into a lump as it loses the molasses moisture it was made with. Both are physical problems with physical fixes. The date on the bag exists because packaged food is expected to carry one, not because the sugar becomes anything other than sugar.
How to store it
- Airtight, at room temperature.
- Keep brown sugar sealed; a slice of bread or a terracotta disc in the tub keeps it soft.
How to tell it has gone
- Hard lumps mean moisture has moved in or out. Warm brown sugar briefly and it softens again.
"Use by" and "best before" are legally different. Use-by is a safety date and should be respected; best-before is about quality, and food is usually fine well past it. Where the two diverge matters, the page above says which applies.
Common questions
- Does Sugar expire?
- No. Sugar is itself a preservative — at that concentration nothing can grow in it.
- How long does Sugar last?
- Indefinite
Related pages
- Does Honey expire? No. Honey does not spoil — edible honey has been recovered from Egyptian tombs. Crystallisation is not spoilage.
- Does Salt expire? No. Salt is a mineral, and the date on the packet is a labelling convention rather than a biological fact.
- Does Bottled water expire? The water does not expire. The date is about the plastic, and in some places about the law.
- Does Vinegar expire? No. Vinegar is acidic enough to be self-preserving, and the murky blob in cider vinegar is harmless.
- Does Vanilla extract expire? Pure vanilla extract does not expire — it is 35% alcohol. Imitation vanilla does slowly lose its flavour.
- Does Eggs expire? Degrades in quality
- Does Medicines expire? Degrades in quality
- Does Milk expire? Has a real expiry date
- Does Sunscreen expire? Unsafe or ineffective after the date
- Does Frozen food expire? Indefinite if stored properly
- Does Canned food expire? Indefinite if stored properly
Sources
- US Food and Drug Administration — FDA (Public domain (US Government))