How Much Caffeine Does Cold Brew Coffee Contain? (Pt. 2)
Channel: Daniel Rosehill
Date: 2022-11-12

Cold brew coffee is a growing trend in the coffee world. But have you ever wondered how much caffeine it actually contains?

Claims and estimates from YouTubers and manufacturers are all over the place. 

Thankfully, food scientists have done the research to put the debate to bed with liquid spectography. 

== Main findings  ==

- Brewing cold brew for more than 7 hours at room temperature does very little to increase its caffeine content and brewing it for more than 10 hours does almost nothing

- Coarse ground coffee which was cold-brewed had about 25% more caffeine than hot brewed coffee with the same grind. The difference in caffeine content between the medium grind size samples, however, was negligible and deemed to be not statistically relevant.

Paper cited:

"The Effect of Time, Roasting Temperature, and Grind Size on Caffeine and Chlorogenic Acid Concentrations in Cold Brew Coffee"

(Meghan Fuller and Niny Rao, published in Scientific Reports).

Full text available for free download online:

https://www.nature.com/articles/s41598-017-18247-4

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By: Daniel Rosehill 

== Contact Information ===

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