What is the outer oil of coffee beans? Uncover the secret of this mysterious oil!

What is the outer oil of coffee beans? Uncover the secret of this mysterious oil!

Coffee bean outer oil refers to a layer of oil covering the surface of coffee beans, also known as the coffee beans' "natural protective layer". This mysterious layer of oil brings people many unique experiences and tastes.

First, the outer oil of the coffee bean plays a protective role. It prevents the air, moisture and light from damaging the coffee beans. This protective mechanism allows the coffee beans to be stored for a longer time without losing their flavor and aroma.

Secondly, the outer oil of coffee beans also affects the changes during the roasting process. When fresh coffee cherries are roasted, the high temperature causes the internal moisture to evaporate and generate pressure. At this time, the outer oil will gradually dissolve and form a layer of golden or dark brown liquid on the surface. This process is called "juice extraction" and is a very important step in roasting that cannot be ignored.



In addition, because it contains a large amount of aromatic substances and volatile compounds, the outer oil of coffee beans gives coffee a unique aroma and taste. When the coffee beans are ground into powder, these oils will be released and come into contact with water to form a rich coffee aroma.

Finally, it is worth mentioning that coffee bean oil also has certain benefits for the human body. It is rich in a variety of antioxidants and beneficial fatty acids, and has anti-aging, cardiovascular health protection and other effects. However, excessive intake may also cause indigestion or weight gain.

In short, coffee bean oil plays an important role in the coffee making process. It not only protects the coffee beans themselves and affects the changes in the roasting process, but also gives the coffee a rich aroma and taste. At the same time, it is also beneficial to human health if consumed in moderation.

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