The mystery of the true color of coffee beans, what is the secret behind it?

The mystery of the true color of the jura coffee bean

Coffee beans are one of the most popular drinks in the world, and are enjoyed by hundreds of millions of people every day. However, have you ever wondered what the true color of coffee beans is? This question puzzles many people because we usually think that coffee beans should be black or brown. But in fact, coffee beans can show different colors at different stages and during processing.

Growth stages and color changes

First, let's look at the color changes of coffee trees during their growth. When coffee trees first start to grow, their berries appear green or yellow-green. As the berries mature, they gradually turn reddish brown or dark reddish brown. This means that untreated ripe coffee berries themselves are not the dark brown color we expect.

Processing and Pigment Removal

Then, the post-harvest processing also affects the color of the coffee beans. After picking, the coffee cherries are peeled of their outer skin, a process called dehulling. During this process, most of the pigment is removed, leaving the coffee beans with a light brown or tan color.

Next is the fermentation stage, during which the coffee beans undergo a series of fermentation and cleaning processes. Through the action of microorganisms and steps such as washing and drying, the pigments remaining on the surface of the coffee beans are further reduced. Therefore, the fermented coffee beans usually appear brighter brown.

Baking and Final Color

The last factor that affects the color of coffee beans is the roasting process. During roasting, the natural oils and moisture inside the coffee beans gradually evaporate under high temperatures and react with oxygen to produce chemical changes. This leads to varying degrees of changes in the internal structure and appearance.

Depending on the type and length of roasting, we can get coffee beans ranging from light brown to dark brown or even black. Light roasting usually retains more original flavor and acidity, while dark roasting produces a stronger bitterness and burnt aroma.

in conclusion

In summary, the true color of coffee beans is a complex and interesting question. Starting from the growth stage of coffee trees, through processing, fermentation and roasting, coffee beans finally present the various colors we know. Behind these different colors are rich and diverse flavor characteristics and taste experiences.

Whether drinking a light, bright cup of coffee or savoring a rich, bitter dark roast, we can enjoy this delightful and vibrant beverage by appreciating the beauty that different colors bring.