Im selling and looking for a buyer for coffee beans: Arabica is the most delicate of all four species. Itâ??s prone to pests and diseases. Great care is needed, one of the reasons why itâ??s often pricier than other types of coffee. Arabica has sweeter flavors and intricate aromas reminiscent of sugar, fruits, berries, and even flowers. Depending on the origin and varietal, hints of chocolate, nuts, citrus, and honey can also show up. It also tends to have higher acidity and lesser caffeine. Robusta contains more caffeine than Arabica, and lesser sugar and lipid content. This results in a sharp, often bitter, and harsher taste. Because of this strong flavor, Robusta is mainly used in blends and instant coffees and is often seen as inferior to Arabica. But donâ??t dismiss it yet. Robusta has more antioxidants and lower acidity. With improvements in harvesting and processing, high-quality Robusta coffee is slowly becoming available.