The last of LocalRoast's the taster pack is No13, the darker roast and maybe the odd one out, since it is a blend with 20% robusta beans. Amongst my fellow coffee snobs, robusta isn't that highly praised, mostly for its bitter flavor and high caffeine contents in comparison to arabica beans.
However, I must say these prejudices weren't that warranted in this case. I had to grind a little coarser, with perfetto at 1,0 and still had quite a slow shot. These beans produce a full bodied espresso with a lot of texture, just not as complex as the other beans from LocalRoast. Taste is very straight: dark pure chocolate, a hint of nuts and overall very light on sour content. Maybe a little less adventurous than lighter roasted beans, but definitely a good case for the illustrious robusta beans.