Sorry not a portobello. Good news is though that it's also not a two minute'r. I'm curious to know, is it just because they're growing in your yard that you want to eat them ?

Took a hike a couple weeks ago out on the OP and walked into Alice's Wonderland... About six different, stunning species growing in harmony in a sun-finger ray corridor, all edible... Although if you did eat them you'd probably still be out there thinking you were Pan, a sprite or a piece of moss !

Good luck with your decision Bongo.