how much caffeine in a double americano?
According to the Mayo Clinic, an 8-ounce cup of coffee has between 95 and 200 milligrams of caffeine. A single shot of espresso, in comparison has between 47 and 75 milligrams. Most cafes use two shots of espresso in an americano, thus making the total caffeine content of an americano between 94 and 150 milligrams.