this post was submitted on 05 Sep 2023
186 points (93.1% liked)
Funny
6800 readers
590 users here now
General rules:
- Be kind.
- All posts must make an attempt to be funny.
- Obey the general sh.itjust.works instance rules.
- No politics or political figures. There are plenty of other politics communities to choose from.
- Don't post anything grotesque or potentially illegal. Examples include pornography, gore, animal cruelty, inappropriate jokes involving kids, etc.
Exceptions may be made at the discretion of the mods.
founded 1 year ago
MODERATORS
you are viewing a single comment's thread
view the rest of the comments
view the rest of the comments
Light roasts have more caffeine than dark roasts. Because they don't roast out all the caffeine.
So this coffee is actually "extra weak".
This isn't true. Unless you're roasting until it literally takes like only charcoal, like noticably darker than a 2nd wave French roast, caffeine doesn't really roast out. Caffeine also seems to be pretty significantly more soluble in darker roasts so between two cups brewed normally with the same mass of coffee, there will be more caffeine in the darker cup. They will have almost the same amount of caffeine if you do a cold brew process.
I kind of love being wrong and updating what I know. I had to find some sources.
https://www.kickinghorsecoffee.com/which-roast-has-more-caffeine
https://www.healthline.com/nutrition/light-vs-dark-roast-coffee
This one references actual scientific studies.
https://pubmed.ncbi.nlm.nih.gov/25212328/
https://pubmed.ncbi.nlm.nih.gov/22032554/
https://pubmed.ncbi.nlm.nih.gov/34071879/
https://pubmed.ncbi.nlm.nih.gov/34200293/
But light coffee doesn't make me feel like a badass, and clashes with my specifically targeted shirt.
Darker roasts do burn off caffeine but it also makes the bean more soluble. Testing has concluded that in the end lighter and darker roast cups end up with generally the same caffeine concentration.
This is probably robusta coffee, which has 2x the caffeine compared to arabica.