What is the difference in the taste of exactly the same coffee beans between washing and tanning?

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First of all, it is necessary to clarify a concept: treatment process = fermentation process.

The treatment of coffee beans is the process of picking coffee cherries from fruit trees and turning them into raw beans before baking. This process can also be regarded as the process of coffee bean fermentation. Just like wine is a wine that needs to be well brewed to produce excellent flavor, so the treatment is similar to raw beans. It is a combination of bacteria and coffee beans, which can lead to the hidden flavor of coffee beans.

●, what is the secret flavor of tanning and washing?

● solarization method

Tanning is the oldest method of treatment. according to literature, Arabs began to use tanning to treat coffee fruits as early as 1000 years ago in the 11th century. Coffee was called "Arab wine" when it was introduced into the West from the Arab world because of its refreshing effect.

Processing process of sun-cured coffee beans

1. Remove floating beans

Pour the coffee beans into a large tank, the underdeveloped inferior beans will surface, and the ripe and full fruits will sink to the bottom of the water. At this time, the floating beans on the surface will be removed, that is, the steps of removing floating beans will be completed.

two。 Insolation

Spread the coffee fruit evenly in the exposure field and turn it several times a day. This process usually lasts about 3 weeks, depending on the local climate, when the water content inside the coffee beans drops to 10-14%, the sun drying step is completed.

3. Remove the shell

After the end of the sun, the outer layer of the coffee seed has been dry and hard, at this time, the shell is removed by the sheller, that is, the treatment step of the sun method is completed.

Advantages of ●:

Except for the step of removing floating beans (which is even omitted in some areas), sunbathing requires no water, and a bucket of water can be reused at low cost, so it is widely used in areas where water resources are not abundant and less affluent.

Disadvantages of ●:

1. Due to the need to keep coffee beans outdoors for a long time, there are often many impurities such as withered branches and leaves.

two。 Because it is the use of the sun's energy, the degree of dryness of coffee beans is not easy to control, resulting in coffee fruit "overdrying" situation, internal coffee beans are damaged as a result.

3. In the process of the sun, because the pulp has not been removed, it is often moldy and rotten.

● flavor:

Because the sun drying method is to let the coffee fruit dry naturally, the coffee beans can ripen naturally inside the fruit and will not be disturbed by the external environment, so the coffee beans treated by the sun method will enlarge their own flavor, mellow, strong flavor, and will emit sweetness, and rich tropical fruit flavor.

● washing method

Due to too many shortcomings of the sun method, the water washing method was invented. Water washing is the most widely used treatment method at present, and the biggest difference from the sun method is the use of fermentation to remove the pectin layer.

The process of washing coffee beans

1. Remove floating beans (same sun method)

Pour the coffee beans into a large tank, the underdeveloped inferior beans will surface, and the ripe and full fruits will sink to the bottom of the water. At this time, the floating beans on the surface will be removed, that is, the steps of removing floating beans will be completed.

two。 Remove the peel and pulp

Through the pulp screening machine (pulping machine), the exocarp and pulp of coffee fruit are removed. It leaves pectin, endocarp and silver peel.

3. Ferment

The purpose of this step is to use biological treatment to remove pectin. Put the coffee fruit processed by the pulp sieving machine into the fermentation tank 16Murray for 36 hours, and the fermentation bacteria will dissolve the pectin.

4. Water washing

After completing the fermentation and removing the pectin, the coffee beans will be cleaned again because the fermentation bacteria and impurities will remain on the coffee beans. In order to clean it, this step consumes a lot of water.

5. Drying and removing endocarp and silver peel

The coffee fruit is usually dried by a machine (or sun-dried) so that the moisture content is reduced to 14%. Then use the sheller to remove the remaining endocarp and silver peel, that is, to complete the processing.

Advantages of ●:

1. All the treatment procedures of the water washing method are indoor, so the impurities in the coffee beans can be reduced to the lowest and the quality is the highest.

two。 Since the flesh is removed in the first place, there is no need to worry about mildew like the sun method.

3. The appearance is relatively complete, and the selling image is excellent.

Disadvantages of ●:

1. The procedure is complex and tedious, so the cost is much higher than that of tanning.

two。 A large amount of water will be used, and it will take 40 murmur50 liters of water to obtain 1 kilogram of coffee beans, so it is less used in areas where water resources are scarce.

● flavor:

As a result of fermentation, coffee beans usually have a bright sour and fruity flavor, and sometimes washing highlights the special flavor of coffee beans.

● so the reason why the treatment affects the flavor of coffee beans, do you get to the point?

The answer is: fermentation time and fermentation degree

Sun method, because beans and peel, pulp together with the sun, a higher degree of fermentation, but also for a long time, can usually develop more tropical fruit flavor.

The water washing method leaves only a thin layer of mucous membrane, and the overall treatment time is also relatively short. even the Kenyan 72-hour water washing method is much different from the sun drying method for a month, so you can imagine the beans washed in general. The flavor is cleaner.

● water wash more fermentation process, but also clean cleaner, refreshing acidity increased. In the sun, due to the preservation of part of the pulp, there is more berry flavor, the taste is more sticky and full, if the sweetness of African beans is also good, but it is also prone to miscellaneous smell.

There is no most direct relationship between the flavor of ● and the way of raw bean treatment. Sun-dried beans can still capture the clean, sour and bright flavor of washed beans after a long period of cultivation (proper storage). Today, some of the washed beans, such as red cherries, are similar to the flavors of strawberries and nectarines in our experience. Bean species and the right baking method often determine the final taste spectrum of a bean, and the difference in treatment is often determined by a certain taste period. The intensity of an element in a taste spectrum. The best taste period of sun-dried beans is in the second five days after baking, while the best taste period of washed beans is longer.

● Sun Coffee Doudou Brand recommendation

Qianjie Coffee freshly roasted single-product sun-baked coffee beans-such as Sun Yega Chevrolet and Sun West Dharma Coffee are fully guaranteed in brand and quality and are suitable for brewing in a variety of utensils. And more importantly, the performance-to-price ratio is extremely high, a bag of half a pound 227 grams, the price is only 70-90 yuan. According to the calculation of 200ml per cup of coffee and the ratio of powder to water at 1:15, 15 cups of fine coffee can be made in a bag, and each cup of coffee only costs about 5 or 6 yuan, which is very cost-effective for cafes to sell dozens of yuan a cup.

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