As long as the bottle is unopened, you can keep it in the pantry or in the kitchen, at room temperature or slightly below. ... Since this condiment contains a copious amount of salt, it won't go bad if you leave it at room temperature for a day or a week.

Does Vietnamese fish sauce go bad?

How to tell if Fish Sauce is bad, rotten or spoiled? Good fish sauce has a clear, reddish brown color without sediment. Fish sauce may experience changes in color and flavor as it ages, but it will not be harmful to consume unless an odor or a mold develops, then it must be discarded.

How can you tell if fish sauce has gone bad?

On rare occasions mold or yeast might develop on the inside surface or lip of the bottle where there's excess moisture and less salt. These growths are usually innocuous, but as with any food, if it looks strange, smells strange, or tastes strange, you should throw it out.