this post was submitted on 20 May 2025
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[–] Krudler@lemmy.world 3 points 2 days ago* (last edited 2 days ago) (1 children)

That's a good question.

I don't know if the molecule is destroyed or transformed.

But I use so little that it wouldn't affect anybody anyways... I don't even think a child who is naive to the molecule would feel a thing

Edit... My curiosity got the best of me, I wasn't able to Google the answer directly, but I found articles asking if reheating coffee destroys the molecule. Apparently an organic chemist got involved and stated that the molecules pretty stable, it will only break down around 350 F. So that would mean most of my food probably has the full effect of whatever caffeine was there.

I accidentally poisoned a love interest when I made her lasagna with espresso in the sauce. Turned out she was allergic to coffee, not caffeine. I didn't know... but whoops a daisy lol

[–] ZDL@ttrpg.network 2 points 1 day ago (1 children)

Caffeine is very stable, yes. But you're not adding much if you're adding just the dregs post-brew. Most of the caffeine is gone by the end of a normal brew. (This is quite unlike tea where you need several brews to get all the caffeine, so despite teas having more caffeine by weight than coffees most of the time, brewed tea has less.)

[–] Krudler@lemmy.world 2 points 15 hours ago (1 children)

You sound confident, like you know things!

I feel like the espresso I brew isn't really that potent? I get a 330ml mug of espresso out of 10g coffee grounds. And then it's not even real espresso, it's just crummy stove top pot "espresso". I started drinking it that way because I was poor and it was a great way to get a lot of flavor for a little coffee grounds. Which I'd also occasionally recycle haha. But I'd be curious to know how actually potent it becomes. How would a person measure such a thing?

[–] ZDL@ttrpg.network 2 points 13 hours ago (1 children)

There's coffee snob sites out there that will go into incredibly gory detail of roast levels and brewing mechanism and caffeine measurement. Like this one. And a myriad of others. (I just took the first hit off a search here, but the search terms were "detailed caffeine breakdown in coffee by varietal, roast, and brewing mechanism". There were many, many, many more hits if that one's not suitable. Like this one.)

[–] Krudler@lemmy.world 2 points 5 hours ago

I checked those out and the information is just vague.

They will say things like a 8 oz cup of coffee has 90 mg of caffeine. They won't tell you how much ground coffee was used to achieve that.

They use weasel statements like espresso will have more, longer brew times will have more. Vague descriptions like "a typical 12 oz coffee will have 95 mg of caffeine, depending on how much coffee grounds were used"

Okay lol