Full Definition of POWWOW. 1. : an American Indian medicine man. 2. a: an American Indian ceremony (as for victory in war) b: an American Indian social gathering or fair usually including competitive dancing. 3.
According to Mountain View Mushrooms, fresh mushrooms can be stored at 34 to 40 degrees F for up to 10 days from the date of packaging.
They've been around for two weeks or more. The general consensus in terms of shelf life/storage time with mushrooms is around two weeks in the fridge. Of course, use your best judgment and common sense. If they look, smell, and feel fine, they're probably still safe to eat.