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2025.09.22

Learn the differences between coffee's bitterness, richness, and aroma

コーヒーの苦味・コク・香りの違いを知る

When you take a sip of coffee, the first thing that hits you is the bitterness and acidity, followed by a rich, deep flavor and mellow aroma. We drink coffee casually in our daily lives, but its taste and aroma depend on many factors, such as the place of origin, variety, roasting level, and extraction method. Of these, bitterness, richness, and aroma are important factors that determine the impression of coffee. By understanding these, you can choose the coffee that suits your tastes and enjoy a more fulfilling experience.

The true nature of bitterness and how to enjoy it

Elements that produce bitterness

The bitterness of coffee is mainly caused by roasting. The chlorogenic acid contained in the beans is broken down during the roasting process and converted into bitter compounds such as quinoline and phenylindanes. The darker the roast, the stronger the bitterness, while lighter roasts bring out the acidity.

The time and temperature of extraction also affect the bitterness. Extracting at high temperatures for a long time can extract excess bitter components, so it is important to extract with a balanced taste.

Tips for enjoying bitterness

Bitterness is not just strong, but also plays a role in creating a pleasant aftertaste. For example, dark roast coffee has a rich bitterness like chocolate , and goes well with milk and sugar. On the other hand, medium roast coffee has a bitter taste that is both slightly bitter and sweet, making it easy to drink and enjoy a refined taste.

Even if you don't like bitterness, you can achieve a good balance by adjusting the roasting level and extraction method. The creamy bitterness you can experience in espresso and cafe latte is one of the deep charms of coffee.

The depth of richness

What is richness?

The word "richness" is difficult to put into words, but it generally refers to the depth of flavor and the long-lasting aftertaste. The pleasant feeling that lingers on the tongue and the deep flavor that spreads throughout the mouth are called "richness."

The factors that create the rich flavor are the oil and sugar in the beans, and the chemical changes that occur during roasting. Beans from Brazil and Guatemala in particular are known for their strong, rich flavor .

How to bring out the richness

If you want a rich flavor, we recommend a method that can fully extract the oils from the beans, such as French press or espresso. Hand drip using a paper filter produces a clean taste, but you can maintain a moderate richness by using a clever extraction technique.

The degree of roasting is also important. Medium to dark roasted beans have a good balance of sweetness and bitterness, making them a satisfying coffee to drink .

The difference in the impression given by scent

Coffee aroma elements

It is said that hundreds of different compounds contribute to the aroma of coffee. A wide variety of aromas are possible, such as floral, fruity, or sweet aromas reminiscent of nuts or chocolate. The impression of the aroma is greatly influenced by the region of origin and variety.

The beans from Ethiopia have a gorgeous aroma of citrus and berries, while the beans from Colombia have a well-balanced aroma. The aroma is what makes a cup of coffee special , enriching the soul even before it even hits the palate.

Tips for enjoying the aroma

To fully enjoy the aroma, it is important to extract the coffee beans immediately after grinding them. Volatile components begin to evaporate the moment they are ground, so simply grinding the beans just before drinking will dramatically improve the quality of the aroma.

Also, by consciously smelling the aroma, like with cupping, you can find out your own preferences. We recommend choosing a scent based on the time of day or your mood, such as a refreshing fruity scent in the morning, or a calming scent like nuts or chocolate in the evening.

Considering the balance of bitterness, richness, and aroma

How to choose the right drink for your occasion

  • Wake up in the morning with light, aromatic medium roasted beans
  • For your afternoon break, try a rich, medium-dark roast.
  • For a relaxing evening, try a dark roast coffee with milk.

Choosing coffee for each occasion like this will make coffee a more enjoyable part of your day.

Find the flavor that's right for you

What people prioritize among bitterness, richness, and aroma varies from person to person. For example, if you want to enjoy the aroma, you should choose a light roast , while if you prioritize richness, you should choose a medium-dark to dark roast . The process of finding your ideal balance through trial and error is also an important part of the coffee-enjoying experience.

summary

The appeal of coffee lies in the balance of elements such as bitterness, richness, and aroma. Bitterness creates a lingering aftertaste, richness adds depth to the flavor, and aroma enriches your mood even before you drink it. Each element not only shines on its own, but when combined, a cup of coffee takes on infinite possibilities.

By being aware of the origin of the beans, the degree of roasting, and the extraction method, you can get closer to the taste you are looking for. And the type of cup you choose can make each day even more special. Coffee is not just a drink, it is something that enriches your daily life .

Be sure to try searching for your own favorite coffee, paying attention to the differences in bitterness, richness, and aroma. You'll discover new pleasures you've never discovered before.

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