The gorilla among my blends. 30% Robusta gives the silverback a powerful body with a long finish. This blend tastes good to anyone who likes it strong, tart and creamy. Cup profile: dark chocolate, cocoa nibs, walnut, almond Key facts: our strongest espresso blend 70% Arabica, 30% Robusta Guatemala, Brazil, Rwanda Variety: mixed varieties processed dry & washed About the coffee: The gorilla among our blends. 30% Robusta gives the silverback a powerful body with a long finish. This blend tastes good to anyone who likes it strong, tart and creamy.