While there are dozens of different coffee beans, the most significant ones are Arabica and Robusta. They differ in taste, growing conditions and price. Arabica beans have a sweeter, softer taste, with lots of sugar, fruit, and berries and a higher acidity. Robusta, on the other hand, is easier to grow, has twice as much caffeine as Arabica and a stronger, harsher taste. Robusta beans are considered to be of inferior quality compared to Arabica.