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.
Rinse quickly under cold running water just before cooking, then spin them dry in a salad spinner or pat them thoroughly with a towel. MUSHROOMS
To avoid "rubbery" or "soggy" mushrooms, use methods that drive off moisture before browning begins. How To Cook Mushrooms - Michael Ruhlman Look for caps that are firm and whole with an even texture
Mushrooms are culinary "sponges" that require specific handling to achieve their best flavor and texture. Because they are roughly 80–90% water, the primary goal of preparation is to manage moisture. To avoid "rubbery" or "soggy" mushrooms, use methods
Most fresh mushrooms last about one week in the fridge when stored properly. 2. Cleaning and Preparation