this post was submitted on 15 Mar 2024
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Mycology

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Deadly morel mushroom outbreak highlights big gaps in fungi knowledge (arstechnica.com)
submitted 7 months ago by recreationalplacebos@midwest.social to c/mycology@mander.xyz
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On Thursday, Montana health officials published an outbreak analysis of poisonings linked to the honeycombed fungi in March and April of last year. The outbreak sickened 51 people who ate at the same restaurant, sending four to the emergency department. Three were hospitalized and two died. Though the health officials didn't name the restaurant in their report, state and local health departments at the time identified it as Dave’s Sushi in Bozeman. The report is published in the Centers for Disease Control and Prevention's Morbidity and Mortality Weekly Report.

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[–] LibertyLizard@slrpnk.net 55 points 7 months ago* (last edited 7 months ago) (5 children)

The author of this article seems to be as ignorant as the chefs behind this incident.

Morels are known to be toxic until cooked. I’m surprised there was no explicit mention of this in the article.

In general, the boilerplate advice is to never consume raw mushrooms, even from species known to be edible, unless they are explicitly known to be edible raw. Button mushrooms are the only one I can think of. It’s likely other species are edible raw too, but it’s better not to gamble if it’s unproven.

People preparing or consuming wild foods should make sure to do the proper research. That is the only safe way to practice foraging. Very sad that people died because of this.

[–] 0x1C3B00DA@fedia.io 15 points 7 months ago (1 children)

"Morels are more likely to cause intestinal distress if eaten raw, although even raw, they can be tolerated by some people," the agency wrote. Morels should be cooked before eating, as cooking can destroy bacterial contaminants. "For that matter, all mushrooms, wild or cultivated, should be cooked to release their full nutritional value because chitin in their cell walls otherwise inhibits digestion," the USDA writes.

The article mentions multiple times that cooked mushrooms are safer than raw ones.

[–] LibertyLizard@slrpnk.net 21 points 7 months ago (2 children)

Safer because “bacterial contaminants” and “full nutritional value”. These things may be technically true but they mislead by the larger omission that the real issue is their established toxicity.

[–] Glowstick@lemmy.world 2 points 7 months ago (1 children)

I wish food irradiation became popular. If only people weren't so irrationally afraid of any word that sounds like the word "radiation", then we would be able to safely eat all kinds of foods fully raw without any chance of getting sick from a microorganism.

[–] Luccajan@sh.itjust.works 1 points 7 months ago (1 children)

I thought food irradiation went out of favour because the microbes became resistant? I have no idea where I heard that so maybe it's just people's irrational fear of "radiation".

[–] Glowstick@lemmy.world 2 points 7 months ago

Nope, that's false

[–] 0x1C3B00DA@fedia.io 2 points 7 months ago* (last edited 7 months ago)

The article also points out that there were people who ate the raw sushi with no adverse affects, so mentioning "their established toxicity" seems like it would be just as misleading.

[–] sharkfucker420@lemmy.ml 11 points 7 months ago* (last edited 7 months ago) (1 children)

Psilocybe cubensis is also edible raw but make sure not to eat the portion that was connexted to rhe substrate bc it probably has poop on it lmao

That may have been more than half a gram lmao

[–] TwiddleTwaddle@lemmy.blahaj.zone 3 points 7 months ago (1 children)

I would still consider cubes poisonous. Although it won't kill anyone haha.

[–] Shdwdrgn@mander.xyz 6 points 7 months ago

I was wondering about this when I read the article this morning, as I have never once heard of anyone who ate morels raw or even partially cooked. Is this some kind of new trend trying to follow the Japanese who eat puffer fish?

[–] ccunning@lemmy.world 4 points 7 months ago (2 children)

People preparing or consuming wild foods should make sure to do the proper research. That is the only safe way to practice foraging. Very sad that people died because of this.

You’re 100% right. For the record these mushrooms were cultivated; not wild, but also from China which introduces its own concerns.

[–] Taniwha420@lemmy.world 1 points 7 months ago (1 children)

How? You can't cultivate morels.

[–] ccunning@lemmy.world 3 points 7 months ago

I thought the same until I recently learned otherwise:

Cultivating Coveted Morels Year-Round and Indoors

Jacob and Karsten Kirk, twins from Copenhagen, say they have devised a method to reliably grow morel mushrooms in a climate-controlled environment.

“When new buds emerge on trees and the ground warms with the advent of spring, foragers fan out through woodlands, scanning the leaf litter for morel mushrooms.

Arguably the most iconic of wild fungi, morels stand 3 to 6 inches tall and sport a signature cone-shaped lattice cap in shades of cream to chocolate brown. Prized for their nutty, earthy taste, they sell for as much as $50 a pound fresh and $200 a pound dried. They appear for just a fleeting few weeks — in New York, generally from late April to early June.

Experienced morel hunters return to well-guarded spots year after year, often exhibiting a form of selective hearing loss when asked where they collected their haul.

“There’s something about morels — they have a mystique that people are fascinated by,” said Gregory Bonito, a biologist studying morels and other fungi at Michigan State University. And unlike some wild mushrooms, which can be easily cultivated, morels have a quirky life cycle that makes them notoriously tough to grow, Dr. Bonito explained.

Cultivating morels isn’t impossible. Until 2008, at least one U.S. grower produced them commercially. And since about 2014, farmers in China have done it outdoors in the spring, but yields can be variable, Dr. Bonito said. He leads a small morel-farming project in Michigan and surrounding states funded by the U.S. Department of Agriculture. All the participating farmers but one grew at least one morel last year, he said, though this year’s numbers are ticking up.

But prospects for morels on demand appear to be looking up. In December, after four decades of research, Jacob and Karsten Kirk, twin brothers from Copenhagen, announced that they had devised a method to reliably cultivate hefty amounts of morels indoors, year-round, in a climate-controlled environment.

[–] LibertyLizard@slrpnk.net 1 points 7 months ago

Good point. However the issue is a less developed food culture around these mushrooms than their mode of production/harvest. So I think the same logic applies here.

[–] Guenther_Amanita@feddit.de 3 points 7 months ago (1 children)

I wouldn't even eat raw button mushrooms like you suggested.

In the best case, they can't be broken down by our bodies, so all the nutrients wander through us and get wasted.
In the worst case, the agaritine found in them, which easily gets destroyed by cooking btw, may get classified from suspectedly carcinogenic to carcinogenic.

[–] LibertyLizard@slrpnk.net 1 points 7 months ago

I’ve heard this but considering they are widely eaten without issue I’m not convinced it’s a real problem. Many foods contain carcinogens, but it’s the dose that makes the poison. Considering the history of raw consumption it would take research demonstrating a link to cancer outcomes to convince me they’re not safe.

That said, I think they taste much better cooked anyway.