I've rarely used dried mushrooms, and the few times I have I've soaked them before using them in a recipe. If there was any dirt in the 'shrooms, it would leach out into the water and be discarded, or so I've read and believed.
I want to make mushroom powder from dried 'shrooms I found in the cupboard a few days ago. Instructions I've seen say to grind 'em up, and no mention was made about dirt.
Do I need to be concerned about dirt and grit in these mushrooms? Are some types of mushrooms more problematic than others? Is the whole dirt and grit thing about dried mushrooms overblown?
The ground mushrooms will be added to a meat sauce to enhance the flavor.