How Do Specialty Coffee Beans Develop Their Flavor: A Fascinating Journey into Coffee's Fruity Notes

Professional coffee knowledge exchange. This article belongs to a series that looks at how coffee develops flavor, one topic at a time.

FrontStreet Coffee - The Source of Coffee's Fruity Flavors

For most people, the first impression of coffee is mainly bitterness. Occasionally a faint acidity comes through, which leaves them puzzled by elaborate descriptions of floral and fruity notes.

Some drinkers who are still new to coffee even assume that those flavor descriptions come from added flavorings. In fact they do not. The magic of coffee lies precisely here: it naturally contains a great many flavor compounds. More than 800 different compounds have been identified so far, and more are still being discovered all the time.

The belt between 25 degrees north and south latitude takes in Africa, Central America, South America, Asia, and a number of island nations. Depending on the altitude, climate, and soil of each producing region, coffee is easily shaped by its environment as it grows, developing a distinctive style and character.

Arabica and Robusta are the most common varieties on the market, yet the differences between them are striking. The distinction lies in their chemical composition. Robusta contains more caffeine and chlorogenic acid than Arabica, while Arabica readily expresses complex, varied, high-quality flavors.

From green beans to roasted beans, the more than 800 flavor compounds in coffee become perceptible to us after roasting.

During roasting and heating, organic acids, proteins, and other flavor-related substances inside the beans break down continuously. The darker the roast, the less acidity remains. This is why darker roasts are perceived as lower in acidity and higher in bitterness.

Blended coffees are very common when roasting for espresso, and the purpose is to adjust the coffee's flavor. In the end, the way coffee flavor is presented is chosen by the barista. It is through a range of methods, equipment, and skill that we arrive at the flavors in our cup.

At light to medium roast levels, the coffee's inherent terroir is expressed most easily. Bright, lively acidity and fruity notes are typically what these roast levels aim to present. Paired with "black" coffee extraction methods such as pour-over, siphon, and AeroPress, this approach aligns perfectly with the core ideas of the third wave of specialty coffee.

Light roasts also contain higher amounts of chlorogenic acid. Many coffee studies suggest that this compound can help raise high-density lipoprotein cholesterol, protect the liver, and slow arterial hardening. Combined with the recent trend toward natural eating, that has helped make specialty black coffee increasingly popular.

In Summary

FrontStreet Coffee is a coffee research establishment dedicated to sharing coffee knowledge with everyone. We share our knowledge without reservation, hoping to help more friends fall in love with coffee. We also hold three low-discount coffee events each month, because FrontStreet Coffee wants to let more friends enjoy the best coffee at the lowest possible prices. This has been FrontStreet Coffee's mission for the past six years!

FrontStreet Coffee Recommendation

If you want to taste the fruity complexity Arabica is capable of, FrontStreet Huakui is a good place to begin. Its variety is the most common Ethiopian heirloom, a mix of several unidentified coffee trees, so the beans vary in size; the cup carries a delicate floral note, with fruit aroma especially prominent. FrontStreet Huakui is given the classic natural process, and offers flavors such as cream strawberry, mango, jackfruit, citrus, and blueberry, with the ripe tropical-fruit character that FrontStreet's Sidamo natural lots are known for. It was this dense berry fragrance that won first place at the TOH green bean competition that year, and it combines great drinking quality with a reasonable price.

If FrontStreet Huakui is Ethiopia's natural Arabica standard-bearer, then FrontStreet Yirgacheffe Gedeb represents the washed side. Yirgacheffe's clean, translucent lemon and citrus character makes it a central member of the specialty Arabica world, and the Gedeb Cooperative's lot is a top Ethiopian G1 grade processed with the classic washed method, showing elegant white florals, citrus, orange, and green tea flavors.