Arabica bean VS Robusta beanThere aren't much differences between the coffee beans especially after they are roasted. At then end, its the black aromatic beverage that would be the outcome. However, it is well known that Arabica coffee bean is much more expensive than Robusta coffee. But it is not because Arabica coffee bean being higher quality. It just that Arabica coffee bean tasted better compared to the Robusta coffee. But then again, it still depends on the preference of the person who drinking the coffee.
Arabica coffee beans have a sweeter, softer taste, with tones of sugar, fruits, and berries. The beans also has higher acidity, give it a wine-like taste that characterize the coffee with excellent acidity. While Robusta coffee bean has a stronger and harsher taste, with a grain-like overtone and peanut aftertaste. Robusta coffee bean contain twice as much caffeine as Arabica coffee beans. Although considered to be inferior quality than the Arabica coffee bean, Robusta coffee bean is highly valued in making espresso due to its deep flavor and good crema.
Robusta coffee beans also cheaper than Arabica coffee beans because they are easier to cultivate. They can be grown at lower altitudes than Arabicas and less vulnerable to pest and weather conditions. Robusta coffee bean tree also produce fruits faster than Arabicas and yielded more crop per tree. This is why Robusta is commonly used for instant pre-mix coffee packs sold in the supermarkets.
Arabica coffee beans are much more expensive because the cost of cultivating them are higher due to the coffee bean trees are prone to pest problems. Arabica coffee bean trees are also heavily affected by the climate changes, and require high altitude and low temperature to produce the crops optimally. Arabica coffee beans are usually made into premium coffee ground in pack.
Even with all of these differences, the myth of Arabica being higher quality than Robusta is actually untrue. Ultimately, both coffee have its own specialty that could fulfill the preference of coffee drinker. As a matter of fact, it is well known that both of these coffee beans can be blended together to give out the best coffee drinking experience.
Sources: CoffeeChemistry, theKitchn