Wild mushrooms should be cleaned gently to avoid bruising or breaking the delicate caps. The best method is to wipe them clean with a damp cloth or brush off any dirt or debris with a soft-bristled brush. If the mushrooms are particularly dirty, they can be briefly rinsed under cold running water, but they should be dried thoroughly with a towel or paper towel before cooking or storing. Avoid soaking wild mushrooms, as they will absorb water and become soggy.