Yes, it is generally recommended to wash mushrooms before using them in cooking to remove any dirt or debris. However, it is important to wash them quickly and gently to prevent them from becoming waterlogged.
Instead, first dampen a wet cloth. The cloth should be soft, do
not use paper towel. Then, gently rub the mushroom top and inside.
If using the stems, clean as well. Otherwise, snap off the tops and
discard the stems. Lastly, store mushrooms in an airtight container
so as to prevent early rot. If immediately cooking, tops of the
mushrooms can be sliced lengthwise into 1/4 inch slices.
What should I know before pressure cooking for the first time?
Before using, check all the vents and moveable safety features
to insure they are not blocked or stuck shut. Make sure you add
water or your food won't cook