Do espresso beans have more caffeine than coffee beans?
While it would seem the brewed coffee has more caffeine, it's actually the espresso that has more caffeine per unit volume: an average of 57 mg per ounce for espresso versus about 7 14 mg per ounce of brewed coffee.
Can you use regular coffee beans in espresso machine?
Any type of bean can be used to make good espresso. You can absolutely make great espresso from “regular” coffee beans, though “espresso” beans are usually stronger. No.
How many espresso beans is equivalent to a cup of coffee?
Since the typical mug3 of coffee is about 120 mg of caffeine, it's roughly equivalent to the caffeine levels of 30 of these theoretical chocolate-covered beans.