How much oil do coffee beans contain? Explore the mystery of coffee beans' rich oil content!

Coffee beans are one of the most popular beverages in the world, with billions of cups consumed every day. However, few people know why coffee beans contain rich oils.

First, we need to understand how coffee beans are formed. Coffee trees grow in tropical and subtropical regions. Their fruits are called "cherries" and contain two seeds, which are coffee beans. These seeds go through a process of picking, peeling, fermenting and drying to become the coffee beans we know.

In fact, oil is mainly found in unprocessed raw endosperm. Endosperm is the tissue inside the seed that provides nutrients and energy for germination. When the cherry fruit matures, the endosperm gradually hardens and accumulates a lot of starch, and oil is also produced in the process.

However, not all varieties or types of coffee beans have the same amount or quality of oil content. Different geographical environments, climatic conditions, and planting and processing methods will affect the oil content of coffee beans. Generally speaking, coffee beans from high altitudes usually contain more oils because coffee trees growing at lower temperatures require more energy to maintain their normal functions.

In addition, the roasting process also affects the oil content in coffee beans. During roasting, the water inside the coffee beans begins to evaporate and the temperature gradually rises. When a certain temperature is reached, the starch stored in the endosperm begins to decompose into soluble substances and releases a large amount of gas and liquid. This process is called the "first crack", which marks the green coffee beans turning brown or black.

However, continued heating after the first pop causes more starch to break down and release more gas and liquid. At the same time, the oils accumulated in the endosperm also begin to be released and combine with other coffee shop compounds to form a complex and rich aroma substance.

In summary, the amount of oil in different varieties and types of coffee beans depends on the growing area, processing method and roasting degree. These factors work together to give each cup of coffee a unique flavor and taste.