Typical Italian espresso relies on Robusta blends, so some bitterness is unavoidable in this case. 100% Arabica based coffee can be more palatable, depending o

Typical Italian espresso relies on Robusta blends, so some bitterness is unavoidable in this case. 100% Arabica based coffee can be more palatable, depending on grinder quality, espresso machine, right grind size and some other factors. Recently Red Bourbon is the variety that appeals to me most.