Why Does Aftertaste Matter in Coffee Tasting?
Aftertaste is a separate scored item in coffee cupping, covering the taste, coffee aroma, and mouthfeel that linger after swallowing. A cup with vivid flavors can still score poorly if that lingering impression is weak or unpleasant, and the sensation is subtle enough that tasters need deliberate practice to notice it.
Aftertaste forms as aromatic and taste compounds remain in the mouth after the liquid is gone, much like the lasting impression of durian. Comparing pour-over and espresso shows espresso often carries a longer, denser finish, while pour-over tends toward a lighter one, and these qualities of coffee are judged on duration, clarity, and whether the finish stays pleasant.
In the coffee cupping scoring system, aftertaste occupies a position that cannot be overlooked. Even if a cup of coffee has outstanding flavors, it will be difficult to score high if its aftertaste performs poorly. However, many enthusiasts often neglect this dimension, because the aftertaste itself is rather subtle and requires certain skills to capture. From the perspective of Front Street, this article systematically explains the definition of aftertaste, the principles of its formation, methods of perceiving it, and the criteria for judging its quality, while also comparing the differences in aftertaste duration between pour-over coffee and espresso, helping readers build a complete understanding of the tasting process.
In the coffee cupping scoring system, aftertaste is an independent evaluation item. Even if a cup of coffee has quite outstanding flavors, as long as it lacks good aftertaste performance, its final score will not be ideal. This shows that aftertaste occupies a fairly key position in the evaluation of a cup of coffee. However, the reason many enthusiasts neglect it is not intentional, but rather because the sensation of aftertaste itself is relatively subtle, and some methods are needed to truly appreciate its subtlety. So today, Front Street will talk with everyone about how to perceive aftertaste.
As the saying goes, knowing your opponent is the way to defeat them. To clearly perceive aftertaste, you first need to understand what aftertaste actually is. What is aftertaste? Simply put, it is the sudden emergence of a section of taste, aroma, and mouthfeel in the mouth after we swallow coffee. This sensation is "aftertaste." The flavors and aromas we experience before swallowing are quite vivid and direct. By contrast, aftertaste appears much weaker, and we must concentrate carefully to roughly capture the taste and aroma within it.
It is easy to understand if we use an example from daily life. For instance, when eating durian, we can feel durian's strong smell and taste, and after swallowing it, this breath still remains in the mouth for quite a long time. This is aftertaste. If we replace the main subject with coffee, the principle is the same, though coffee certainly does not have the same impact as durian. How is aftertaste formed? As mentioned earlier, the expression of aftertaste covers aroma, taste, and mouthfeel, which respectively correspond to the experiences of different senses after swallowing coffee. Among them, aroma accounts for the vast majority, and the place where aftertaste is displayed is inside the oral cavity. In other words, coffee's aftertaste mainly comes from the perception of coffee aroma through retronasal olfaction. Because coffee contains a large amount of oil-soluble aromatic substances, they are not soluble in water. When we drink coffee, some coffee oils attach to the oral cavity, and when these oils gradually dissipate, the aromatic substances begin to be released and are then captured by our retronasal olfaction. Many times we feel a burst of aroma rising from deep in the throat, and this is exactly why.
Therefore, if you want to feel the aftertaste more fully, you can close your mouth and exhale after swallowing the coffee, allowing the released aromatic substances to be sent through the passage between the oral and nasal cavities, and then perceive them through smell. In this way, you can capture the aroma in the aftertaste to the greatest extent. Of course, it is not only smell; taste and touch should also be engaged together to feel the returning taste and mouthfeel. The combination of all three is the essence of aftertaste. However, it should be noted that although aftertaste is important, not all aftertaste is positive. Does aftertaste also have good and bad distinctions? Judging the quality of aftertaste mainly starts from three aspects. First, taste. Good aftertaste presents positive flavor expressions such as floral notes, honey, caramel, and tea-like qualities, with specific differences depending on the roast level of the coffee beans; while poor aftertaste brings negative tastes that make people uncomfortable, such as burnt bitterness, astringency, and excessive fermentation.
Next is mouthfeel. The mouthfeel of high-quality aftertaste is very smooth (it does not make people uncomfortable), with obvious sweetness returning, and no unpleasant experience at all; while inferior aftertaste produces very uncomfortable feelings such as dryness, roughness, and throat-catching. Finally, there is duration, and this point is very critical. What we usually call having aftertaste or not having aftertaste actually refers to the issue of length of time, because logically speaking, coffee all has aftertaste, only some are relatively short. The longer the aftertaste lasts, the richer the substances contained within it, and the higher the quality; the reverse is also true. In addition, it should be noted that different types of coffee also have different aftertaste durations. For example, espresso is extremely concentrated. If it has an excellent aftertaste, then the aroma and taste can remain in the mouth for more than ten minutes. But if it is pour-over coffee, even if the aftertaste quality is very good, the duration will not be too long.
The above content is compiled by CoffeeHunters, a coffee news website.
