What is robusta coffee?
Quick answer
Coffea canephora (robusta) has more caffeine, harsher earthy flavor, and grows at lower altitudes — cheaper, common in espresso blends and instant. Rarely sold alone in specialty shops but shapes many supermarket espresso beans.
Should home brewers buy robusta?
Usually as part of a blend for espresso or moka pot — adds body and crema. Straight robusta pour over is an acquired taste.
Common questions
Why is it in espresso blends? Crema, body, and cost — balanced with arabica.
Arabica vs robusta? Read the comparison.
For stovetop strong coffee, see moka pot guide.