Two shots of espresso (a double shot or "doppio") typically contain about 126 to 140 milligrams of caffeine. A single shot usually has around 63 to 75 milligrams of caffeine, so doubling that gives you this range
. The exact caffeine content can vary depending on factors such as the type of coffee bean (Arabica vs. Robusta), roast level, grind size, water temperature, and extraction time. Arabica beans have less caffeine than Robusta, and lighter roasts tend to retain slightly more caffeine than darker roasts
. In summary:
- Single shot espresso: ~63-75 mg caffeine
- Double shot espresso (2 shots): ~126-140 mg caffeine
This is a common amount served in most coffee shops and is roughly equivalent to the caffeine in a medium cup of brewed coffee, but concentrated in a smaller volume
