So which part of those are edible? Slice up the stem? The beehive kinda looking upper part?
Then cooking-- how about bake? Low temp fry in some bacon grease? Chop up and sautee in a bit of gravy?
Seems pretty much any way to soften them up some works.
Nemo
We have them up here in AK but they are very hard to find. The one I do find are usually pretty small and I make a cut or two and fry in butter or bacon grease. I've eaten them like that or tossed in an omelet, with steaks or whatever.
Another option is to freeze them. IIRC I cut to the size I wanted, placed them on a cookie sheet and put them in the freezer over night. After they were totally frozen I quickly vac-sealed them and then back into the freezer until I wanted to use them. I dont remember if I cooked the prior to freezing or not