Mike Oxlong wrote:What part of didn't you understand? You need a triple expresso to match a single cup of brewed coffee. They are comparing single servings, in each of the links & quotes provided.
I don't know where you pulled 40mg/oz from, but it's wrong. More like 80/oz, and a shot is 1.5oz. A shot of espresso is roughly the same caffeine as an 8 oz cup of coffee. Those figures agree with what the Gaggia factory reps said when they installed the massive commercial espresso machine in my mom's restaurant. I will trust them over random wikipedia editors.