Fresh mushrooms have a sponge-like density that either absorbs moisture or sweats it out to become slimy in storage, so it is important to keep them dry. Wrap mushrooms in kitchen paper towels and store in a brown paper bag in the refrigerator crisper drawer.
Washing mushrooms impairs their texture and peeling diminishes their flavor: there is no need to do either. Brush off any surface grit or growing medium with a clean, dry pastry brush or some kitchen paper towel if necessary.
** Asian Recipes