Which has more caffeine coffee or espresso?

Question

i like cuban espresso coffee but i have heard that it has more than double the caffeine of regular coffee because the beans they use are different.

Answer 1

In comparison to coffee,  espresso has more caffeine per unit volume than most beverages. A 30 mL (1 US fluid ounce) shot of espresso has about half the caffeine of a standard 180 mL (6 US fluid ounces) cup of drip brewed coffee, which varies from 80 to 130 mg, and hence a 60 mL (2  US fl oz) double shot of espresso has about the same caffeine as a 180 ml (6 US fl oz) cup of drip brewed coffee.