Try to look for use by date, on the bottle, but I would be chucking the thing , anyway if you can remember when it was opened, if stored in cupboard after opening,( after use, then get medical advice!! store in your refrigerator, no more than # months tops!!!

Forever. like the user above, I don’t think I’ve ever seen bad fish sauce..

OK, I’m Thai and I live with fish sauce …..and I would say that it’s last more than 3days, more than a week, more than a year. I think it’s last very long long because I’ve never seen bad fish sauce in my life.

Anyway, it’s best before one-year after open it and you will notice that it’s already bad when you saw salt dregs lay on the bottom.

You should store it in dry and cool place. No necessary to keep it in the fridge.

Hope I can help you!!

once open you should use within 3days.

in a cabinet and i have sum thats like 5 years old still edible
and if u dont believe me then y am i still alive?

It should last for awhile, since my mom buys like about 5 every 2 months b/c its cheap or something.

It lasts forever. You can leave it on the countertop or in a cabinet, it really doesn’t matter actually. Also you can add a little fish sauce instead of salt sometimes.

I’m not sure that fish sauce has an expiration date. it is drippings from fish. so i guess it is already spoiled. I’ve had mine for about a year, still good i guess. still taste like rotten fish

I read online that it lasts 3 years unopened, but up to a year opened. Also, it doesn’t matter if you keep in in the cabinet or fridge. I too have a huge bottle- because I couldn’t see buying a little bottle for $3.50 from the “taste of thai” brand and the big bottle was $2 from the asian market. =)

If it’s the really salty Thai stuff, it will last forever. You don’t even need to put it in the fridge. It is like vinegar in the sense that you can store it the same way.