Britt Bunyard, the founder, publisher, and editor in chief of the mycology journal Fungi, has tasted a death cap. “Very pleasant and mushroomy,” he told me. “A nice flavor, and then you spit it out.”
“There’s nothing in the taste that tells you what you are eating is about to kill you.”
The ones in the comic don’t look like death caps, but those are responsible for 90% of mushroom-related poisonings, so we’ll assume artistic license.
Death caps probably would go well with pasta. Here is an article from The Atlantic with someone who has tasted one.