posted 15 years ago
For awhile all the cooking shows were telling people not to wash their mushrooms because they would absorb too much water and lose a lot of flavor. Then Alton Brown (of Food Network) devoted a "Good Eats" episode to mushrooms and showed scientifically that they do absorb water, but it's like a gram's worth - and besides, they are mostly water anyway (think about a dehydrated mushroom verses a plump, fresh one), so it doesn't make much difference in the flavor.
Interestingly, I've noticed a complete shift from every other cooking show (I watch a lot) telling you not to wash your mushrooms before that episode, to absolutely no cooking shows making a peep on the subject afterwards...