If Caffeine is your goal then the Robusta coffee bean is for you! Robusta has a higher caffeine content from 30 to 50% more than arabica. The robusta tree has larger leaves, deep roots, higher yields and It tends to be more disease resistant. Because of its heat tolerance and ability to produce high yields, robusta coffee is often grown at high densities in full sun. As a dark roast this coffee bean can be used as an espresso base. If you want a double caffeine boost then this bean is for you.-->