コルク質になる前ならば食べられるそうだ。
細かく切って水につけ、沈んだものは食べられるらしい。
でも、ちょっと手を出したくない形だ。
It seems to be eaten if before it becomes the cork.
I cut it finely, and into the water, and the thing which sank seems to be edible.
But it is the form that does not want to really eat.