Coffee roasting degree analysis, five stages and eight levels of in-depth exploration

Abstract: This article explores the five stages and eight levels of coffee roasting. The article points out that different roasting degrees have a huge impact on the taste, aroma and experience of coffee. By carefully analyzing the characteristics of each stage and level, the article helps readers understand how to choose the right roasting degree according to their personal taste, and emphasizes the importance of correct roasting to improve coffee quality.

In the world of coffee, roasting is a mysterious yet important step. It gives coffee beans a second life, allowing the flavor, aroma and taste of the coffee beans to be fully displayed. But did you know that coffee roasting does not have only five simple stages? In fact, it can be divided into eight levels in a more detailed way? Let us explore the mysteries of these five stages and eight levels in depth.

1. Overview of the five baking stages

1. Very light roasting : The surface of the coffee beans at this stage is light yellow to light brown. The moisture inside the coffee beans has not yet completely evaporated. The taste is sour, with bright floral aromas and green fruity flavors.

2 Light roasting : The color of the coffee beans deepens, showing a light brown to golden color, and the surface begins to show oily sheen. At this time, the flavor of the coffee beans is balanced, with moderate acidity, obvious fruity aroma and a little sweetness.

3. Medium roasting : The coffee beans are dark brown, the oiliness is more obvious, the flavor gradually becomes balanced, with both sourness and sweetness, and begins to show a unique coffee aroma.

4. Dark roasting : The color of the coffee beans deepens further, showing dark brown to black brown, with a lot of oil on the surface. At this time, the acidity of the coffee is reduced, the sweetness and bitterness are enhanced, and it has a rich chocolate flavor and caramel aroma.

5. Extra dark roasting : The coffee beans at this stage are very dark in color, almost as black as charcoal, with a very noticeable oily surface. The sourness of the coffee is almost imperceptible, replaced by a strong bitterness and an over-burnt caramel taste, with a thick and strong taste.

2. Detailed Study of Eight Baking Levels

In addition to the above five stages, a more detailed division divides each stage into two levels, as follows:

1. Very light baking :

At the initial stage , the coffee beans are almost oily, the surface is slightly dry, and the taste is sour and astringent, with a grassy and green fruity aroma.

In the second stage, the coffee beans begin to swell slightly, and the internal moisture evaporates further, showing a faint sweetness and a brighter fruity aroma.

2. Light baking :

In the initial stage, the surface of the coffee beans begins to show a faint oily sheen, the taste is refreshing, the acidity is obvious but well-balanced, and it has an aroma of fruit and floral notes.

In the second stage , the oiliness gradually becomes more obvious, the fruity aroma becomes more intense, and a slight nutty and sweet taste begins to appear, making the overall flavor more harmonious.

By analogy, medium roasting, dark roasting and extra dark roasting each have two levels of changes. The changes at each level will affect the taste, aroma and flavor of the coffee. For example, in the sub-stage of medium roasting, the coffee begins to show a unique sweetness and coffee aroma; in the sub-stage of dark roasting, it shows a rich chocolate and caramel aroma, etc. These subtle changes require careful observation and experience to perceive the difference.

The artistry of coffee roasting lies in how to master the transitions and changes in these five stages and eight levels so that each cup of coffee has its own unique charm and flavor. Whether you like light roasted coffee with bright acidity or dark roasted coffee with a strong flavor, you can find your own cup of coffee among them. Every attempt and exploration can enable us to understand the charm and mystery of coffee more deeply.