Robusta
Robusta coffee is grown under monsoon rainfall conditions in lover altitudes, mostly in the southern states such as Karnataka, Kerala and Tamil Nadu of India and with more shallow roots, Robusta coffee beans have almost twice as much caffeine than Arabica, making it perfect for espresso lovers or someone who likes their coffee a bit bitter in taste. Robusta coffee beans have a low sugar content which means a longer shelf life. It's the second most popular coffee bean in the world.