Yellow Stainer (Agaricus xanthodermus)

In this video a yellow stainer is examined and the features are explained. It is an important mushroom to understand since many people become sick after eating it.

[@caposdad]

Hi Thanks for the video. I have been picking field and horse mushrooms for some time. Three days ago whilst walking the dog in a wood I came across what I thought was a horse mushroom. The next day I hit upon a large source of horse mushrooms and picked about 3KG. I have a dryer like your and could not fit them all in. Those which were left were used to make a soup. Shortly after eating it myself and my son felt unwell. The symptoms were like an upset stomach with a mild headache. My son felt the urge to vomit but didn't in the end. I was starting to think I had mis identified the horse mushrooms but I had picked from this source for years without problems. Then I remembered the mushrooms (3 in total) I had picked from the woods and it all started to make sense. I had not come across the yellow strainers before and therefore had not checked. Your video has been enlightening and has alerted me to be more careful when picking. Regards Mike

[@AshleyMillsTube]

Nice, glad you were OK in the end.

[@MedievalGenie]

Extremely helpful when you picked a mature version later as I found the same condition and the staining was faint and mostly around the base, plus the smell was perfectly fine. I think I've got a mature yellow stainer that looks and smells otherwise like a standard agaricus.

[@simongodfrey3765]

I've picked yellow stainers and horse mushrooms and sometimes it is difficult to tell the difference. Sometimes the horse mushrooms go a little bit yellow and sometimes the yellow stainer doesn't stain that much or smell too bad. Best tip I found is to put a lump in the microwave on full for 20-30 seconds; the yellow stainer comes out with a pool of bright gold liquid and now smells awful, whereas the horse mushroom smells good and has brown juices.

[@nesegeltese]

I picked some Agaricus in our garden which had only a slight yellowing in the base of the stem but not any yellowing elsewhere and it had a mushroom-like, pleasant smell. So I thought I should test it so I cooked a few pieces and it still smelt like mushrooms. I was a bit unsure still so I shared the pics in a mushroom identification group, and I was told it was definitely the yellow stainer even though it didn't smell bad. So the question how could anyone eat something smelling that bad is thereby answered: it doesn't always smell bad! So the lesson is to be careful with Agaricus even if it smells nice...

[@jontymellmann9233]

Super helpful - thanks! I found some growing in a J-shape out of a hedgerow with rotting coniferous wood and lots of wet soil and autumn leaves. They were pinkish and went grey after picking, growing nearby also were common earthballs (yellow and white crusted skin) and sulphur tufts! Thanks for the very helpful video!

[@AshleyMillsTube]

Thanks man

[@rebeccalynn3092]

Thank you for the video. Teach us, please. I've been a nature nut my whole life. We have a small five-acre farm in west Michigan. Half the property is wooded. I often find myself romping around out there, trying to identify various mushrooms and plants. I'm cautious by nature, so I want to be doubly sure before cooking anything. Awe man, I sure wish I could talk with you and people like you. Sometimes it feels like my questions will never be answered. By the way, super cool t-shirt!

[@AshleyMillsTube]

Hi Rebecca, farm sounds fantastic! Perhaps there is a mushroom group near you somewhere or on meetup? Tshirt was from etsy, cheers.

[@zee-bb8uv]

Hello Rebecca..finely I feel someone shares my thoughts too..hope I can be your friend...am just a nature lover like you born and raised in the city but wish I had the chance to explore the woods like you.

[@primemeridian0]

Thank you. I definitely picked these and not Agaricus campestris, which is a bummer because I thought I had picked my first batch of edible mushrooms. Onward to more learning. I am not eating wild mushrooms until I've tried all the tests and watched all the videos. 😅

[@AshleyMillsTube]

Good to hear you were able to stop yourself from eating some yellow stainers!

[@matumilian4263]

It's confusing that the video desn't mention other yellow staining agarics like agaricus essettei or agaricus arvensis both of which are edible. I would love to see a side-by-side comparison of those with the yellow stainer.

[@borizovskimilan]

I have it thrown away just now. Somewhere I read that Horse Mushrooms stain also yellowish but not so fast like Yellow Stainer, when I cut the cap it took some time to stain yellow, and I thought "I may have a Horse Mushroom" but I was not 100% sure, then I cut the base and it stained yellow so fast as if the base was already yellow. The chances were more that I had YS than HM, I am not 100% sure because it is the first time I am identifying field mushrooms.

[@jacobfunnell65]

This video was SO useful just now. Really hammering home that it's the base and can be faint further up helped me spot my "field mushrooms" are stainers! Thanks for helping save me from projectile vomiting.

[@AshleyMillsTube]

no worries, cheers

[@beccolvin1531]

What a helpful video. Thank you!

[@AshleyMillsTube]

You're welcome!

[@sydbarret1973]

Thank for that very useful information…. Just picked loads of horse mushrooms and wanted to make sure

[@AshleyMillsTube]

Nice

[@AlastairYoung1]

Phew! Glad i found this video. Was convinced id found a horde of horse mushrooms.

[@AshleyMillsTube]

glad I was able to help :)

[@Clarke1982]

Thanks very much for the information here. It helped me a great deal and reassured me that I do in fact have Horse Mushrooms (relief!). Best wishes and happy Autumn.

[@AshleyMillsTube]

cheers, hope it was tasty

[@choppinbroccoli7037]

I picked two full buckets of yellow stainer mushroom from my yard. They smelled really good. I did the taste and spit test too. The taste was nice and rich. But I threw them away because I didn't want to risk getting projectile vomiting.

[@AshleyMillsTube]

some people can stomach them, but I suppose there is only one way to find out, I'm not interested in performing the experiment :)

[@JokaTHePatriot]

Agaricus Arvensis also stains yellow when you cut it with a knife on the cap, but it smells nicely and its edible, high quality.

[@abbyalphonse499]

I thought yellow stainer mushrooms smelt unpleasantly like ink.

[@onlywayisforward]

Great I've been looking for something just like this. Good stuff.

[@drZoidberg1969]

4:01 man you got 3 hands !

[@AshleyMillsTube]

haha, that's creepy isn't it

[@fertysurfer]

I've just eaten a bit of one! Thought it was a field mushroom. Hopefully the southern comfort I've just had will take my mind off what may soon be to come. Ill update this later. Wish me luck.

[@AshleyMillsTube]

good luck. some people have no issue with this mushroom so you might be one of the lucky ones

[@fertysurfer]

Turns out I'm a lucky so and so as no effects whatsoever. Perhaps Southern Comfort is the answer to everything.

[@driftertravelerman6893]

you know youre getting good at id when seeing that on a Cutting board Induces almost instant anxiety

[@AshleyMillsTube]

haha

[@tomrandles275]

If you scratch some of cuticle away on the cap, it very quickly turns the same bright yellow as seen in the base. Can help to identify the mushroom without pulling it out of the ground.

[@AshleyMillsTube]

Interesting, will have to try this. Thanks.

[@phillyb8347]

How does the spore print differ between the stainer and the field mushroom?

[@mariateresazinser8711]

I picked one today , it did not go yellow at the base but it did on the cap, a thin layer went a bright yellow, so I kind of peel it off and cooked them, they looked so good and didn’t smell bad, ( but there was a bit of garlic salt and herbs in the pan, so I don’t know if that hid the bad smell), I wasn’t sure so I threw it out, but I really wanted to eat it!

[@dusanboss7749]

Elastoplast ... yeah I think that is smell. It was little bit over half hour what I ate them. So let see what would happen. :) This I ate last week didn't have that weird smell. I mean isn't intense smell, or unpleasant it's just little bit strange... hmmm

[@stephenfriesen7636]

Thank you sir! Solid video. Pretty sure I found some horse mushrooms today, doing some research before eating....

[@AshleyMillsTube]

Cheers Stephen!

[@andrejmicko3195]

Thanks Man, you saved my day

[@rosemarymay3914]

That's good to know I cooked field mushrooms and there was a weird smell but didn't get sick hope some I picked today are ok they smell ok but didn't get them picked really low.

[@AshleyMillsTube]

It is worth noting that some people can eat the yellow stainer without getting sick, so if you thought there was a weird smell but you were fine, you might be one of those people.

[@korzer]

Field mushrooms are known to smell a bit sickly

[@dhammo749]

Aint the 1st time ur mrs has bought home a funguy

[@dusanboss7749]

Wow, I think I ate more than few of those mushrooms. I only learned today they are poisonous. Everything was fine with me, but i'm not sure they were yellow stingers. Well I think remembering little yellowish color while cutting bottom.. hmm. I would look better from now.

[@drontt888]

on video - poisons Agaricus xanthodermus, you maybe eating Agaricus abruptibulbus - it`s yellow too, but ONLY on the skin of the mushroom hat, the bottom of the leg does not turn yellow, this is important

[@dusanboss7749]

@@drontt888 Those had yellow on legs to. Also odd unpleasant smell when you cook them

[@sukanjanachuaiprasit5199]

You also can test by making some marks or scratches on the top of the mushroom if it showed yellow stains it's not safe to eat too.

[@AshleyMillsTube]

This isn't really true. The edible horse mushroom as well as several other edible agarics, also bruise pale yellow in the cap and stem. The chrome yellow at the base of the stem, and the elastoplast smell upon heating are the sure giveaways of the yellow stainer.

[@chanelchanel1913]

Thanks very much for so usful video!❤❤❤

[@AshleyMillsTube]

You're welcome

[@DANDIIDAY1111]

Very good video

[@AshleyMillsTube]

Cheers

[@jimpasquin7585]

I notice the Stainer mushrooms does not have as dense of material in the stem either. The agaricus Arvensis is smooth dense meaty and white all throughout the mushroom.

[@AshleyMillsTube]

Thanks for the info :)

[@jsnthurst1]

What about scratching the cap? I have heard that shows yellow staining.

[@goshhowhorrible8340]

Thanks for the informative video. Where did you get your mushroom t shirt?

[@seriousearthling]

u awesome - will be buying my rooms from Safeway or Trade J for ever!! no I could never figure out the difference and I can thank you for that. don't want to have a few off days - can't stand off smells. Can't wait for next video.

[@AshleyMillsTube]

cheers :)

[@Kuraminz]

Spoiled a bunsh of champinjons now when i realized 3 turned yellow in the water. Good thing i microwaved one that had some yellow and it turned bright super yellow. Then a normal champinjon and it was fine. Also as you say after microwave it smelled really bad of hot plaster bandaid..😅

[@AshleyMillsTube]

Glad you noticed, it's a strange smell isn't it!

[@ujlt7198]

ive been looking all over the place for this video, haha. So horse mushrooms never have pink gills?

[@choppinbroccoli7037]

What does it mean that the mushrooms I picked had a pleasant smell? No bad chemical smells at all?

[@AshleyMillsTube]

Well, the yellow stainer when heated smells like plasters, the kind you put on a cut. It really stinks you wouldn't be able to miss it. But the chrome yellow base is also a dead giveaway.

[@rottsmusic3791]

Its a bit early for horse or field mushrooms but i think ive got some sidewalk agaricus. First batch, cut and cleaned, still white. Second batch, cut and cleaned. Looks fine, but was a dirtier looking batch so i threw it on the burner on low heat with a bit of iodized salt. When i pulled em off, the caps in this batch are turning yellow. But the stems and where i cut the base still look fine. Think im good? Also both batches came from the same cluster.

[@AshleyMillsTube]

Sounds good but can't know for sure without seeing it in person. The yellowing reaction in the base is really extreme in the yellow stainer and the stink from cooking should be obvious.

[@lightfoe4863]

I once found some mushrooms which looks like agaricus arvensis it was white upon cutting, but they slowly started turning yellow later. I still cooked and ate it, actually 5-6 persons ate it and none of us had any problems. Does anyone have an idea what that mushroom was it has been 4 years and i havent seen one again.

[@AshleyMillsTube]

Could have been yellow stainer, not everyone has a reaction. But more likely it might be horse mushroom, pavement mushroom, or one of the other white agaricus.

[@AdaptiveApeHybrid]

Pretty sure I got these growing near a tree line. About to fucking try them tomorrow morning. Life's a fucking risk

[@maibeppu9]

This is the mushroom used to semi poison Daniel Day Lewis in Phantom Thread and control his behavior.

[@AshleyMillsTube]

They should have used a zombie plant like datura stramonium

[@adancabdicumar6077]

Somali

[@kenfletcher1240]

Your wife was driving around a field?

[@AshleyMillsTube]

I don't understand, from where did you deduce that conclusion?

[@kenfletcher1240]

​@@AshleyMillsTube Listen to the first two sentences of your video.

[@AshleyMillsTube]

@@kenfletcher1240 haha you're right, I don't know what I meant by that but I'm pretty sure she wasn't driving around a field. That would be cool though

[@kenfletcher1240]

@@AshleyMillsTube :)

[@jahpickney2640]

I just found bunch of these. BUNCH

[@dylansturm8065]

So yellow is bad.

[@AshleyMillsTube]

a chrome yellow stain in the base yes