How does a shot of espresso compare to a cup of coffee in terms of caffeine? - Quora
How Much Caffeine In A Shot Of Espresso?
Which Has the Most Caffeine—Coffee, Tea, or Espresso? | Stories | Kitchen Stories
How Much Caffeine in a Shot of Espresso?
How much caffeine in double espresso? - Two Chimps Coffee
Human Bean Coffee and Tea - Let's talk caffeine! Did you know that a regular cup of drip coffee has more caffeine then a shot of espresso? Many think that because an