So interesting! I have Mama O's and Sunja's, both opened for well over a month, but no funky fizz or mold. Tastes just fine. Thanks for the helpful advice everyone!
I thought kimchi lasted forever too. I usually buy Mother-in Law's Kimchi at the grocery store...their website says discard after it's been open one month... I was surprised.
Actually, they say it continues to be good for up to a month (I'm paraphrasing). That doesn't mean to discard it if you enjoy heavily fermented foods. If it's moldy or fizzy..toss it. If you enjoy the extra fermentation, then enjoy the kim chi. I make my own and usually have had enough fermentation after 60 days. My Korean friend thinks I'm a baby.
Is it raw or pasteurized? Either way, it lasts a long, long time..as in it's often allowed to ferment 2-3 years even. If there is no mold, it's probably just fine. If it has a sort of fizz, it's probably over-fermented. Have you ever taken a sip of oj that has been around too long? That kind of fizz. If you purchased it, there should be a use by or best by date on it.
It's fermented sop you should be able to keep it for several months. The exact number of months I'm not sure about. If it's growing mold or smells or tastes off, then I'd say toss it. I know I've had jars of kimchi in my fridge for a good 6 months and have still eaten it but I'm not sure if that would be kosher to a food safety expert.
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