Characteristics and differences of medium and deep roasted coffee beans

Characteristics and differences of medium and deep roasted coffee beans

Medium-dark roasting is a common method of processing coffee beans. It gives the coffee beans a stronger and richer taste while retaining a certain degree of acidity and aroma. Compared with other roasting methods, medium-dark roasting has its own unique features.

1. Baking time

Compared with light roasting or heavy roasting, medium-depth roasting takes longer to complete. This allows the internal chemical reaction of the coffee beans to fully occur and form more complex flavor substances. Generally, the roasting can be stopped when oil drips from the medium-dark to dark surface.

2. Flavor characteristics

Because of the long-term high-temperature treatment, when oil drips from the medium-dark to dark surface, stopping the processing will cause the internal moisture to be completely volatilized, and the acidic substances will gradually turn into bitter substances. Therefore, in terms of taste, medium-dark roasted coffee beans usually have a rich and full taste, but also have a certain bitter taste. In addition, medium-dark roasting can also make the coffee beans emit a special aroma, such as chocolate, nuts or toast.

3. Caffeine Content

Compared with other roasting methods, medium-deep roasting causes more water to evaporate from the coffee beans, and the acidic substances gradually turn into bitter substances. These changes not only affect the taste and aroma, but also the caffeine content. Generally speaking, under the same weight, medium-deep roasted coffee beans contain less caffeine than light roasted or heavy roasted ones.

4. Suitable varieties

Different varieties of coffee beans will show different flavor characteristics after being roasted to different degrees. For some varieties, the best roasting degree is to stop processing when the oil drips from the medium-dark to dark surface. For example, coffee beans from Brazil, Colombia, and Guatemala usually show their rich flavor characteristics after being roasted to medium depth.

5. Suitable drinking method

Medium-dark roasted coffee beans are richer and fuller in taste, so they are very suitable for making espresso, latte or other coffee drinks with milk and other seasonings. This can balance the bitterness with milk and highlight its rich aroma.

6. Storage period

Since more moisture evaporates after medium-depth roasting, it has the advantage of keeping the flavor stable for a longer time compared to other roasting methods. Of course, correct and appropriate storage is also very important to maintain the best taste and aroma.

Summarize

Medium-dark roasting is a roasting method that stops the coffee beans from being processed before the oil on the surface drips off, giving them a strong taste and rich aroma. Compared with other roasting methods, it has the characteristics of longer processing time, strong and full taste, special aroma and lower caffeine content. Suitable for varieties and drinking methods, medium-dark roasting has also become a popular way to process coffee beans.