Try these recipes, inspired by the West's best farms.
Cleaning: Wipe mushrooms with a moist paper towel. Don't wash or brush, which can damage them. If you see a lot of compacted dirt, scrape it off with a knife.
Storing: Use a paper bag, not plastic-which doesn't let them breathe, so they soften and rot. Even if you forget them in the paper bag, they won't be bad, just dried, and you can reconstitute them in hot water.