this post was submitted on 19 Aug 2026
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Mildly Interesting

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I quick-picked some green beans and a week later, the garlic in the jar had turned blue green, turquoise, smurf color. I googled it and brought up a reddit thread that said it's safe to eat.

I did not eat it.

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[–] chocrates@piefed.world 27 points 4 days ago* (last edited 4 days ago) (1 children)

Sorry couldn't upload in an edit.

Excerpt from "the art of fermentation". About fermented (not necessarily pickled) garlic.

LvlMPM8CMgWMYgQ.jpg

Oops, not sure how to fix the rotation

[–] FudgyMcTubbs@lemmy.world 29 points 4 days ago (3 children)

Dude, nice source. I rotated and highlighted for the next pickler that has never seen blue garlic before.

[–] Wren@lemmy.today 6 points 4 days ago* (last edited 4 days ago) (1 children)

This is true! I'm no chemist but I make paint pigments from plants rich in anthocyanins, which give them colour. Popular mordants (things that helps a colour stick to fibre) are copper salts, which can brighten the colour or make it more blue/green.

And, an old kind of pigment, verdigris, was made by hanging pieces of copper in closed containers with vinegar, where the vapour would cause a blue/green/gray salt to form.

[–] FudgyMcTubbs@lemmy.world 4 points 4 days ago

Super interesting!

[–] jaygray91@piefed.zip 2 points 4 days ago

When I saw the post thumbnail on my feed and opened the post, I guessed it's some kind of copper reaction. Neat

[–] chocrates@piefed.world 2 points 4 days ago
[–] dumples@piefed.social 6 points 4 days ago

I've eaten the blue-green garlic before. It's delicious

[–] chocrates@piefed.world 5 points 4 days ago

I'm pretty sure that is common in pickled garlic but do some reading on it I guess.

[–] ThePantser@sh.itjust.works 5 points 4 days ago (1 children)

Trusting a post on reddit is almost as dangerous as trusting AI.

[–] Sludgehammer@lemmy.world 13 points 4 days ago (1 children)

IIRC this is kinda a "There the same picture" sort of situation, since most LLM's lean heavily on Reddit as a source.

[–] ThePantser@sh.itjust.works 2 points 4 days ago

Exactly, and you dont know if someone fucked with their post to "delete" it. Would be a great way to poison AI by editing your posts with wrong info instead of garbage info.

[–] PumaStoleMyBluff@lemmy.world 3 points 4 days ago

Sometimes it turns blue just sauteing it in butter