Comparing caffeine levels...by The SIR Coffee Company on 11/12/12
Many folks assume that espresso coffee has more caffeine than drip brewed coffee, and initally this may be a true belief. However, the fact of the matter is that an 8oz serving of drip brewed coffee contains 100mg on average, whereas one shot of espresso contains 30-50mg. To further complicate caffeine calculations, the content of the same coffee drink can vary from day to day because of various factors, such as the type of coffee (arabica and/or robusta)being used, the roasting, grinding, and brewing time*. Go to the Mayo Clinic webpage listed below for more caffeine comparisons and become an informed, wise caffeine consumer!