How Long Does Miso Last in the Fridge?
Written by Jordan Morley · Storage times from the USDA FoodKeeper database · Last updated 28 October 2026
Miso keeps for 1 year in a fridge running at 0–5°C.
Storage tips for miso
- Fridge at 0–5°C. A fridge thermometer is the cheapest food-safety upgrade — many home fridges run warmer than their dial suggests.
You can also check the calorie content of miso alongside its safety information. Want to know exactly what's in your food? Our ingredient checker covers E-numbers, allergens and vegan status.
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Store it properly
Fridge thermometer
These storage times assume 0–5°C — check what your fridge actually runs at.
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Miso next to similar foods
| Food | Fridge time |
|---|---|
| Nut Oils | 6–8 months |
| Wholemeal Flour | 6–8 months |
| Miso | 1 year |
| Regular Cornmeal (Degerminated) | 1 year |
| White Flour | 1 year |
Of the 18 cupboard and condiment foods with a fridge time in this guide, miso keeps for longer than 15 and the same time as 2.
Common questions
How long does miso last in the fridge?
1 year in a fridge running at 0–5°C (USDA FoodKeeper guidance). After that, quality and safety both start to slip, and because the bacteria that cause food poisoning are invisible, ‘it seems fine’ is not a reliable test. When in doubt, throw it out.
How can I tell if miso has gone off?
Rancid or stale smells, clumping, insects, mould and bulging, leaking or rusted tins are all reasons to throw it away. Do not rely on this alone: the time guideline matters even when everything looks fine.
Can I freeze miso to keep it longer?
Freezing is not recommended for this food; the texture tends to suffer badly. Buy or cook only what you will use in time.
Does my fridge temperature really matter?
Yes. These times assume a fridge at 0–5°C, which is what the Food Standards Agency says to set it to. Bacteria grow faster in a warmer fridge, and many fridges run warmer than their dial suggests, so a cheap fridge thermometer is worth having.
Related answers
Primary source: USDA FoodKeeper.
General information only, not medical advice: see the medical disclaimer. Feeling unwell after eating something? Contact NHS 111 or your GP.