Damsel in dis Dress wrote:
>
> On Sun, 14 Dec 2008 11:09:27 -0600, "Pete C." >
> wrote:
>
> >Realize that many of those a "best by" dates, not expiration or safety
> >related dates, particularly for stuff like salad dressing.
>
> Speaking of those dates ... I have a tub of plain yogurt in my fridge
> that's marked November 17 (this year). It's partially used, and I
> just discovered it with the lid bulging. It did the phooosh thing
> when I opened it. Time to toss it, or is that just a yogurt thing?
>
> I have another tub that I bought at the same time which is still
> sealed, so I don't have any qualms about using that.

If it's bulging it's certainly suspect. Could be the proper yogurt
bacteria, but probably more likely to be some other less desirable
bacteria that got in during use.