I’ve got to love an espresso blend that is called “The Elephant”. This name comes from the fact that it contains 20% robusto beans from India.
Robusto beans are lower grade than arabica, but contain about twice the caffeine from what I’ve been told. Italian espresso blends usually pack a good bit of robusto for this reason, but the flavor isn’t usually good enough to warrant killing your blend quality. This particular robusto supposedly tastes good enough to use much more. I can’t wait to try it.