Blends can combine coffees brought to different degrees of roast, coffees with different caffeine contents, and/or straight coffees from different origins. The overriding goal of specialty blenders is simply producing a coffee that is more complete and pleasing in its totality than any of its unblended components would be alone. This goal is particularly important in espresso, because the concentrated cup produced by the espresso brewing method tends to reward balance and completeness rather than the often interesting but imbalanced flavor profiles of coffees from single origins.
