Caffeine Testing: Specialty vs Chains

I took my caffeine meter out and about in London to compare caffeine levels in espressos around the city.

My Caffeine Analysis video:    • I Did Caffeine Analysis: Some Unexpected R...  

Links:
Patreon: www.patreon.com/jameshoffmann
Limited Edition Merch: geni.us/TensHundredsThousands

My Books:
How to Make The Best Coffee At Home: geni.us/howtomakethebestcoffee
The World Atlas of Coffee: geni.us/atlasofcoffee
The World Atlas of Coffee Audiobook: bit.ly/worldatlasofcoffeeaudio
The Best of Jimseven: geni.us/bestofjimseven

Find me here:
Instagram: www.instagram.com/jimseven
Twitter: www.twitter.com/jimseven

Things I use and like:
My video kit*: kit.co/jimseven/video-making-gear
My current studio coffee kit*: kit.co/jimseven/studio-coffee-kit

My glasses: bit.ly/boldlondon
My hair product of choice: geni.us/forthehair
*Affiliate links