Arabica and Robusta are two different coffee species. Arabica is known for its more complex flavor profile, often showing brighter acidity, more aroma, and notes that can range from fruit and florals to chocolate and caramel. Robusta, by contrast, usually produces a stronger, bolder, and more bitter cup with a heavier body.
Another key difference is caffeine content. Robusta generally contains more caffeine than Arabica, which contributes to its stronger taste and greater bitterness. Arabica is often preferred in specialty coffee for nuance and clarity, while Robusta is valued for strength, crema, and performance in espresso blends and instant coffee.