The difference between washing coffee beans and insolation why coffee beans are more rich in sun flavor?

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Why are sun-dried beans richer in taste and washed cleaner and more sour?

Coffee beans will have what kind of flavor, in fact, you can see from the way coffee beans are processed.

First of all, we must first clarify an idea: processing process = fermentation process

Coffee bean processing is the process of picking coffee cherries from fruit trees and processing them into pre-roasted beans

This process can also be seen as the fermentation process of coffee beans.

Just as wine needs to be well brewed to produce excellent flavor, the process is similar for raw beans,

It is a combination of bacteria and coffee beans fermentation processing, coffee beans can be hidden secret flavor guide out oh!

So sun and water washing method, what kind of secret flavor will there be?

Sun-drying method, simply speaking, is to use the sun to dry coffee cherries with pulp and peel, so English is called Nature.

However, this nature processing method seems easy but not simple, and his refinement has also gone through some effort.

Commercial sun treatment is to spread a piece of plastic cloth on the ground and put coffee beans directly on it for sun exposure;

However, this problem will be due to the heat transfer and thermal convection instability of coffee cherries. If they are not stirred frequently, there may be problems with excessive heating or uneven fermentation.

(Imagine that the beans on the top are very comfortable, and the beans under them may smell strange.)

In addition, there are many bad strains and pollution on the ground, which will also destroy the flavor of coffee beans.

So traditional sun, there are a lot of flavor, early good beans will not use the sun to process, because people have a bad impression, the price is not high

However, in recent years the sun has improved a lot.

Most of the current solarization methods use African elevated sheds, which can effectively block moisture and soil on the ground and increase air convection. The temperature will also be strictly controlled during the sun exposure process, so as not to cause excessive fermentation due to high temperature.

The whole process of solarization usually takes more than 20 days, so that the strains and coffee cherry pulp gradually ferment, so the flavor is sweet, but also with rich tropical fruit flavor.

The washing method is to remove the peel and pulp of the harvested coffee cherries, and throw the remaining seeds and a layer of residual mucosa into a sink for fermentation with water. The entire fermentation time is only about 24-30 hours.

Compared with the solarization method, the washing method has better quality control. In the washing process, the defective beans floating on the water surface can be easily removed, and the flavor is not easy to appear.

Also because of the short fermentation time, the beans are completely naked and washed in the sink, so the washing method will present a clean and flawless taste.

In fact, the washing method can also be subdivided into machine drying in the latter stage or sun drying in the latter stage. Different regions will also develop unique washing methods, such as Kenyan 72-hour washing method.

However, in general, washed beans will have high quality and bright fruit acid, flavor is also very clean, sometimes washing method can highlight the special flavor of coffee beans themselves oh.

Therefore, the reason why the processing method affects the flavor of coffee beans is: fermentation time and fermentation degree

Sunlight method, because beans will be exposed to the sun with the peel and pulp, the degree of fermentation is higher, and the time is longer, usually can develop more tropical fruit flavor.

Washing method, leaving only a thin layer of mucosa, the overall processing time is also shorter, even if it is Kenyan 72 hours washing method, and the sun drying time is also a lot worse, so you can imagine the general washing treatment of beans, flavor is cleaner!