robusta

noun

1. (uncountable, usually)Any plant of the species Coffea canephora of coffee plants, native to Africa, cultivated widely in Brazil.
2. (uncountable, usually)Beans, ground roasted beans, or beverage from the robusta coffee bean, used primarily in instant coffee and in blends, with a high caffeine content.

   “Prices of robusta coffee (the lower-quality bean commonly used in instant coffees) rose by 20% in three days last week to their highest in more than a year.”