Can't Taste Coffee Flavors? What is Retronasal Olfaction? Are Hand-Brewed Coffee Flavors Smelled or Tasted?

"Why can't I taste the flavors in coffee?" This is the single most common question FrontStreet Coffee hears about flavor tasting. FrontStreet Coffee has shared plenty of techniques for tasting coffee flavors over the years.

Are Coffee Flavors Tasted or Smelled?

But this article tackles a more fundamental question: are coffee flavors tasted or smelled? Common expressions suggest we "taste" them. From a scientific standpoint, however, coffee contains more than 850 aromatic compounds, most of them volatile — which means the taste buds on our tongues simply cannot detect their flavors.

Only a small share of aromatic compounds are water-soluble, such as the citrus acidity we commonly taste, which comes from substances like malic acid, citric acid, and lactic acid. (That's why citrus is the easiest coffee flavor to pick out.)

There are also substances that are both water-soluble and volatile — acetic acid and caramel among them — which the tongue and nose can both detect. Sipping and perceiving with the tongue alone only tells you the degree of sourness, sweetness, and bitterness in the coffee.

The Role of Olfaction in Coffee Tasting

The nose, meanwhile, can perceive far more of coffee's aromatic compounds (whether you can distinguish them is another matter). Floral, fruity, caramel, chocolate, creamy, woody, burnt, and medicinal aromas all register through the nose — which is why aroma is what draws so many people to coffee in the first place.

But that isn't the whole story of the nose's role. When we sniff coffee directly, it's called "orthonasal olfaction" — it picks up the dry fragrance of freshly ground beans and the wet aroma after brewing. Then there's the other kind: "retronasal olfaction."

The nasal cavity and mouth are connected. When we drink coffee, saliva catalyzes the compounds in the liquid, they vaporize, and the aromas travel back up into the nasal cavity through the nasopharyngeal passage. That's how we perceive so many flavors after swallowing — floral, berry, caramel, chocolate notes that most people mistakenly credit to the tongue, but that actually come from the nose.

So for anyone who tastes only sourness, sweetness, and bitterness but can't seem to "taste" flavors, the likely explanation is that they're relying on the tongue alone. If you want to truly "taste" coffee flavors, try FrontStreet Coffee's approach.

How to Properly Taste Coffee Flavors

Before drinking, smell the wet aroma first. Then take a sip, let your tongue register the taste and texture, close your mouth, and exhale through your nose. This releases the coffee's aromas through the nasal cavity, letting you perceive its full flavor profile through retronasal olfaction.

FrontStreet Coffee Recommendation

If you want to train your nose on florals, start with FrontStreet Coffee's Yirgacheffe Guo Ding Ding Cooperative — a classic washed Yirgacheffe famous for its sweet white-floral fragrance and bright citrus acidity, with flowers remarkably close to jasmine and a green-tea finish. Poured as a hand-brew, it delivers clear floral-fruity tones, an uplifting lemony acidity, and honeyed sweetness. It also excels as cold brew: slow, cold steeping draws out more of the light, small-molecule compounds, producing an iced coffee as refreshing as fruit tea.

FrontStreet Coffee's natural-processed Huakui is another must-try, and its creamy strawberry character is one reason it ranks among the top specialty coffees — a sweetness built during the sun-drying of fully ripe coffee cherries. The silky entry evokes delicate orange blossom, followed by the sweet-tart juiciness of guava, mango, and other tropical fruits that add depth to every sip. If single origins showcase one distinctive flavor, blends exist to enrich texture and layers: the FrontStreet Strawberry Sugar Gesha Blend combines Costa Rica honey process with Panama washed Gesha, uniting raisin, orange, and ripe blueberry aromas with a rose-like scent and a whisper of almond on the finish.

For a truly unique floral experience, FrontStreet Coffee's Mozart comes from Costa Rica, a country famous for honey-processed coffee. It uses a distinctive raisin honey process — depulped cherries are briefly fermented, then dried — yielding beans with natural flavors of dried fruit, ripe pineapple, and sweet orange; as hot water hits the grounds, an enchanting osmanthus fragrance rises. It's fragrant yet clean and sweet, ideal for cold brew or iced pour-over. And for the pinnacle, FrontStreet's Boquete Gesha comes from Panama's Boquete township — home to storied farms like Hacienda La Esmeralda and Elida — with a classic orange-honey sweetness, white coffee-blossom perfume, an entry of citrus, melon, and honey, and a lingering caramel note.