Was wondering if Natto spoils. mine has been in the fridge for 2 months almost and it still looks and tastes fine and I feel fine so I'm guessing the answer is that it doesn't. (I was craving it and had to eat some.) There's no expiration date on the packaging just a very long distance phone number. my japanese isn't that great so I was wondering if anyone out there knew. thanks in advance - tom S.