Free: Contests & Raffles.
How do you clean them? Looks like a motel for bugs.
How do you cook them? I thought the ones I've found were so-so.
Check the base for worm holes and trim the base back. If you still have worm holes, you can soak in salt water for a while and some of them will come out - good protein. Separate the leaves. You can use it like lasagna noodles, roast it, saute it, put in stir fry. It's an excellent mushroom to eat. Super aroma.