Yunnan fine coffee bean grading system taste flavor description Yunnan small coffee brand ranking

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As an agricultural product, coffee beans can not achieve a unified standard like industrial products. It is a normal phenomenon that the size and quality are not poor, so every country that grows coffee beans will develop a unified grading standard to regulate the quality of coffee beans, and also provide a value reference for raw bean merchants and buyers. Qianjie Coffee this article will talk to you about the grading system of Yunnan coffee beans.

So is there a rating standard for Yunnan coffee beans? Is there a basis? The answer is yes. at present, the rating standard of raw coffee beans in Yunnan refers to the "testing Standard of Raw Coffee Grade" issued by Yunnan International Coffee Trading Center in 2019.

However, the grade standard has not been well promoted. Many businesses mostly adopt the "self-evaluation standard". According to the size of beans or altitude, everyone defines their own beans according to the "advantages and characteristics" of their own producing areas, and some even refer directly to foreign rating standards, such as Kenya's grading standards: AA, AB, etc., and recently there are beans whose estates have risen to "AAA" level. "4A" may be coming soon. The result of such market chaos is that the grade is too different from the actual taste and flavor. At present, Yunnan coffee has not been recognized in the international boutique coffee market.

At present, Yunnan coffee is generally rated by particle size + defect rate. The particle size is based on the international standard mesh. At the same time, refer to the international standard of defective bean points, bean shape color, cleanliness, odor, water content and other factors.

Common international coffee grading standards:

According to the size of coffee beans, the round hole grading screen is used for classification. The international custom of small grains of coffee has a size of 10-20, and the number used represents the sieve aperture as the fraction with that number as the numerator and 64 as the denominator, in inches. For example: 14 refers to the raw coffee beans that can pass through a sieve with an aperture of more than 64 inches by 14thumb, and 19 refers to those that can be screened by a sieve with an aperture of more than 64 inches by 19thumb. (1 inch ≈ 2.54cm)

Domestic coffee grading standards are commonly used:

According to the sieve hole 6.5, 6.0, 5.5, 5.0 mm is divided into five levels.

First class: more than 6.5mm, full and complete particles.

Second class: 6.0-6.4 mm, plump, more uniform.

Grade 3: 5.3-5.9 mm, fuller and slightly less uniform.

Level 4: 5.0-5.4 mm, with incomplete rice, accounting for more than 75% of the total.

Level 5: less than 5.0mm, incomplete rice, complete accounted for more than 30%.

International Standard rules for defect Inspection of small Coffee (Arabica Coffee):

It is graded according to the number of defects, and is often identified by how many defects are contained in a certain coffee bean. According to the identification method of impurities and defective beans in coffee beans stipulated by the International Standards Organization, 300 grams of coffee bean samples were taken to calculate the magazines and defective beans for classification.

Yunnan small grain coffee varieties

Friends who read the article carefully have noticed that Qianjie Coffee just mentioned small grains of coffee and actually refers to Arabica coffee beans. In the genus Rubiaceae, various coffee varieties are mainly divided into three major families: Arabica species (Arabica), Robusta species (Robusta) and Liberian species (Liberica). Arabica coffee beans are smaller than others, so people used to call Arabica coffee small grain coffee / small fruit coffee.

Yunnan small grain originally got its name from the iron card, because the iron card seed is the Arabica small seed. The oldest variety of coffee in Yunnan is the tin card. Later, Nestl é settled in Yunnan, because of the poor disease resistance of the iron pickup, but also in order to increase the output of coffee beans, coffee farmers cut down the iron pickup coffee trees with good flavor to plant varieties with poor flavor but good disease resistance and high yield. S288, which is resistant to leaf rust, was initially introduced, and later Katim, which had a higher yield, was introduced. In other words, the coffee trees planted in Yunnan are mainly Katim species.

Compared with the tin card variety, the flavor of Katim coffee will be less deficient. However, with the promotion of boutique coffee culture, Katim coffee in Yunnan has been more scientifically cultivated and planted coffee flavor and quality has also been greatly improved.

In order to make Qianjie coffee feel the charm of Yunnan iron pickup, in 2013, Qianjie coffee began to plant varieties of iron pickup and a small number of bourbon varieties in Yun Lincang, which were used for research and experimental growth. and after the harvest in Qianjie coffee line, offline stores, and named "Qianjie 2013 iron pickup card coffee beans", the flavor will be more clean, sweet and sour balance, the return of sweet and sour obvious.

At the same time, we also bought two kinds of Katim coffee beans in Baoshan area of Yunnan Province. "Qianjie Coffee-Baoshan Water washed Katim Coffee beans" as a selection of rations coffee beans, so that consumers can taste Yunnan nuts, caramel, plum-like flavor characteristics with the highest performance-to-price ratio.

"Qianjie Coffee-Baoshan all Red Fruit Sun treated Katim Coffee beans" uses 100% all red fruits in the sun, which is sweeter than washed Katim coffee beans and has soft red berry acidity.

How to make Yunnan small grains of coffee?

Filter cup: Hario V60

Water temperature: 90 degrees Celsius

Amount of powder: 15g

Ratio of powder to water: 1:15

Grinding degree: 75% of the pass rate of Chinese standard No. 20 screen

First inject 30 grams of hot water and steam for 30 seconds, inject fine water from the central point and slowly circle to 125 grams, and wait for the water level in the filter cup to drop to 225 grams. The total extraction time is about 2 minutes.

At the time of delivery in Qianjie, the coffee beans sent to everyone's hands were freshly roasted within 5 days, and by the time the goods were received, they had gone through a 4-7-day breeding period, and their flavor was the best time. Qianjie also noticed that some friends chose Qianjie instead of grinding because of the high fine powder rate of the grinding equipment at home. It should be noted that after the coffee was ground into powder, the volatilization rate of its flavor substances was accelerated.