Mushrooms File
Remove mushrooms from plastic wrapping immediately. Store them unwashed in an open paper bag in the refrigerator; the paper absorbs excess moisture and prevents them from becoming slimy.
Most fresh mushrooms last about one week in the fridge when stored properly. 2. Cleaning and Preparation MUSHROOMS
Look for caps that are firm and whole with an even texture. Avoid mushrooms that are withered, damp, or slimy, as these signs indicate they are past their prime. Remove mushrooms from plastic wrapping immediately
To avoid "rubbery" or "soggy" mushrooms, use methods that drive off moisture before browning begins. How To Cook Mushrooms - Michael Ruhlman MUSHROOMS