Which Yunnan coffee is worth drinking, and how are beans graded?

Yunnan coffee is grown across four main areas: Pu'er, Baoshan, Dehong, and Lincang. Most beans available today are Catimor, favored for disease resistance and yield, while Typica was the first variety planted in the province and remains the oldest in the arabica line. Yunnan Typica is sold as specialty coffee, with Catimor labeled Yunnan arabica.

Grading follows both international and domestic standards, and variety history explains the flavor gap. After Nestlé entered Yunnan, farmers were encouraged to replace Typica, which resists disease poorly, first with S288 and later with the more productive Catimor. Estates using the natural process and careful brewing parameters now show Typica's quality potential.

Yunnan coffee has long been famous, but with so many production regions and a bewildering array of brands, which one's Yunnan beans are actually worth drinking? This article starts from the two varieties sold by Front Street Coffee — Yunnan Typica and Catimor — and traces the evolution of Yunnan coffee varieties, explains the international and domestic grading standards in detail, and introduces the regional characteristics of the four major production areas: Pu'er, Baoshan, Dehong, and Lincang. It also shares Front Street's planting philosophy at its own estate in Lincang, the technical details of the natural process, and the specific brewing parameters and flavor profile of the naturally processed Typica, helping coffee lovers gain a comprehensive understanding of the current state and quality potential of Yunnan arabica coffee.

Although Yunnan coffee has already made a name for itself, with production areas widely distributed and brands numerous, consumers inevitably wonder: whose Yunnan beans are actually worth buying? Taking Front Street as an example, the Yunnan coffees currently on sale include two: one is the washed Yunnan arabica and the natural Catimor coffee of the Catimor variety, and the other is Front Street's natural Typica coffee.

Coffee Varieties

In the product system of Front Street Coffee, Yunnan Typica is classified as Yunnan specialty coffee, while Yunnan Catimor is labeled as Yunnan arabica coffee in accordance with market convention. Looking at the current market, the vast majority of Yunnan coffee beans consumers can get their hands on belong to the Catimor variety. But tracing back through history, the first coffee planted in Yunnan was not Catimor, but Typica — the oldest and most original variety in the arabica lineage.

The name "Yunnan arabica coffee" actually originates from Typica — Typica itself is an arabica variety. The starting point of coffee cultivation in Yunnan was Typica. The turning point came after Nestlé entered Yunnan: because Typica has weak disease resistance, in order to increase yields, coffee farmers were persuaded to cut down the excellent-flavored Typica trees and switch to varieties with mediocre flavor but strong disease resistance and high yields. The first introduced was S288, resistant to leaf rust, and later it was replaced by the more productive Catimor. In other words, Yunnan's coffee trees today are mainly Catimor. Because Catimor carries Robusta genes, it not only crushes Typica in leaf rust resistance, but its yield is three times that of the latter.

Compared with Typica, Catimor is indeed slightly inferior in flavor. However, with the spread of the specialty coffee concept, the cultivation and breeding of Yunnan Catimor has become increasingly scientific, and both flavor and quality have improved significantly. Robusta beans usually have a bitter taste, and because Catimor contains some Robusta lineage, it is therefore described as having a "devilish aftertaste."

Western and southern Yunnan lie between 15°N and the Tropic of Cancer, with most areas at altitudes of 1,000 to 2,000 meters. The terrain is mainly mountainous and sloping, with pronounced undulation, fertile soil, abundant sunlight, plentiful rainfall, and a significant temperature difference between day and night. Together, these natural conditions shape the unique flavor of Yunnan arabica coffee — strong but not bitter, aromatic but not harsh, with a slight fruity note.

Yunnan Coffee Bean Grading

At present, Yunnan coffee grading is generally based on two indicators: bean size and defect rate. Bean size uses international standard screen mesh numbers as reference, while also taking into account international defect bean point standards, bean shape and color, cleanliness, odor, moisture content, and other factors.

Common international coffee grading standards:

Coffee beans are sorted by size using round-hole grading screens. The internationally accepted size classification for arabica coffee ranges from 10 to 20, with the number representing the screen aperture — an inch fraction with that number as the numerator and 64 as the denominator. For example, grade 14 indicates green beans that can pass through a 14/64-inch screen, while grade 19 indicates green beans that can pass through a 19/64-inch screen. (1 inch is approximately equal to 2.54 centimeters.)

Common domestic coffee grading standards:

Five grades are divided according to screen apertures of 6.5, 6.0, 5.5, and 5.0 millimeters.

Grade 1: above 6.5 millimeters, plump and intact beans.

Grade 2: 6.0 to 6.4 millimeters, plump and relatively uniform.

Grade 3: 5.3 to 5.9 millimeters, relatively plump, slightly less uniform.

Grade 4: 5.0 to 5.4 millimeters, contains broken beans, with intact beans accounting for more than 75%.

Grade 5: below 5.0 millimeters, contains broken beans, with intact beans accounting for more than 30%.

International standard details for defect inspection of arabica coffee:

Grading is based on defect content, usually determined by the number of defects contained in a certain quantity of coffee beans. According to the impurity and defect bean identification methods stipulated by the International Organization for Standardization, a 300-gram coffee bean sample is randomly selected, and the number of impurities and defective beans is counted before grading.

Coffee Production Regions

Yunnan's coffee production regions are far more than just Pu'er and Baoshan; Dehong, Lincang, and other places also grow coffee. However, the Yunnan coffee produced in each region has subtle differences in taste.

【Pu'er】

All nine counties and districts under Pu'er City — Simao, Ning'er, Mojiang, Jinggu, Jingdong, Zhenyuan, Jiangcheng, Lancang, Menglian, and Ximeng — grow Yunnan arabica coffee. The average annual temperature is 17 to 20 degrees Celsius, and the planting altitude ranges from 700 to 1,600 meters.

【Baoshan】

The five counties and districts under Baoshan City — Longyang, Longling, Shidian, Changning, and Tengchong — grow products certified with the Baoshan arabica coffee geographical indication. The planting altitude is between 1,000 and 1,500 meters, with an average annual temperature of 21 degrees Celsius. Coffee produced in Lujiang, Baoshan, was rated as first-grade on the London market as early as the late 1950s.

【Dehong】

The Dehong production region is one of the earliest areas in China to introduce coffee, bringing in arabica coffee from Myanmar in 1914 and beginning large-scale commercial cultivation in 1953. Lincang has an average annual temperature of 18 to 20 degrees Celsius, with no severe cold in winter and no extreme heat in summer, a large temperature difference between day and night, fertile soil, and ample rainfall. During the coffee fruit ripening period, such conditions are conducive to the accumulation of proteins, sugars, caffeine, and other substances, giving Dehong coffee a full-bodied flavor.

【Lincang】

Coffee is grown in townships in Lincang City including Gengma, Zhenkang, Yunxian, Cangyuan, and Yongde. Lincang has a unique geographical location, bordering Myanmar to the west; its climate conditions are superior, with a significant temperature difference between day and night, abundant rainfall, and a mild average annual temperature, making it a focus of attention for many coffee companies.

Front Street Coffee, recognizing Lincang's potential, established its own coffee estate in this production region.

Front Street Coffee Estate

Front Street Roasted Coffee has now passed its 10th year, and its involvement in coffee cultivation began half a year earlier than roasting beans. "Dazhen Coffee," the predecessor of Front Street, initially envisioned growing coffee in a place in Guangdong called Dazhen. At that time, the Catimor seedlings had already grown to 20 centimeters before we truly sorted out the relationship and sequence among variety, altitude, and processing method in specialty coffee. So Front Street abandoned the Guangdong planting plan and went to Yunnan to study coffee cultivation in depth, and by chance found suitable land.

Back then, Front Street chose the hardest path: selecting highlands, cultivating arabica varieties, and planting sensibly.

Yunnan is not a place with four distinct seasons; here there are only the dry season and the rainy season. In the cultivation stage, Front Street implements extremely high standards to create a natural and comfortable growing environment for the coffee trees. Typica is more difficult to manage in the field than Catimor and is sensitive to prolonged sun exposure, so Front Street strives to maintain diversity of plant species and ecological environment within the estate.

From seedling to harvest takes at least three to four years. Today, the Front Street Coffee estate has already welcomed its second coffee season. All the effort is just to hear a seasoned coffee lover say: this is the taste of Yunnan specialty coffee.

Coffee Bean Processing Methods

Front Street's latest batch of coffee beans uses the most traditional and primitive post-harvest processing method for green coffee — the natural process. Perfectly ripe and intact coffee cherries are evenly spread on drying beds to dry. Because the skin and pulp layer are fully retained, the drying process is more complex and takes longer. To avoid over-fermentation, workers need to turn each coffee cherry frequently and on schedule.

Because this Front Street natural Typica uses a Japanese-style processing method, its aroma is very abundant and its sweetness is especially prominent, with preserved-fruit-like sweetness, soft plum acidity, rich nutty notes, and a finish of brown sugar sweetness and black tea character. Many customers who buy this coffee bean consult Front Street baristas: how should it be brewed to release its flavor to the fullest? Front Street's natural Typica is aromatic but not harsh, strong but not bitter, possessing the taste characteristics of traditional Yunnan arabica coffee.

Front Street believes that the flavor of Yunnan arabica is neutral and balanced in character, presenting sourness, sweetness, and bitterness alike. Therefore, Front Street's Yunnan coffees are all medium-roasted, highlighting chocolate and nutty roasting aromas while retaining some acidity. From Front Street's cupping, the Yunnan arabica everyday beans show nutty, herbal, and brown sugar aromas, melon-and-fruit sweetness, and plum acidity, with a balanced mouthfeel. The natural Typica, meanwhile, presents chocolate, baked bread, tropical fruit fermentation, and a black tea finish.

Front Street Brewing Parameters for Front Street Natural Typica Coffee:

To preserve the sweet-and-sour taste and tea-like character of Yunnan coffee, Front Street Coffee uses a medium roast for it. For brewing, a V60 dripper can be used, with a coffee-to-water ratio of 1:15, medium grind (about the size of coarse granulated sugar / 80% passing through a Chinese No. 20 standard sieve), and a water temperature of 91 degrees.

Use staged extraction: first bloom with water equal to twice the coffee dose, that is, 30 grams of water for a 30-second bloom. The purpose of the bloom is to let the coffee grounds release internal carbon dioxide, making the later stages of extraction more stable. Pour in a steady small stream in circles until 125 grams, then pause; continue pouring until 225 grams and stop. After the water in the dripper has finished dripping, remove the dripper, timing from the start of pouring, with an extraction time of 2 minutes 00 seconds. Then swirl the entire cup of coffee to mix it evenly before pouring into cups to taste.

[Front Street 2013 Natural Typica Coffee Flavor] Heavy mouthfeel, prominent sweet-and-sour taste, with citrus and berry notes, a hint of fermented wine aroma, caramel-like sweetness, creamy finish, and black tea character.

Front Street Coffee Brewing Suggestions:

Regarding coffee brewing, Front Street has always believed that the freshness of coffee beans has a huge impact on flavor, so all coffee beans shipped by Front Street Coffee are within 5 days of the roast date. Front Street's roasting philosophy is "freshly roasted good coffee," so that every customer who places an order receives the freshest possible state when the coffee arrives. Coffee's resting period is about 4 to 7 days, so when customers receive it, it is right at its peak flavor.

For friends who need ground coffee, Front Street warmly reminds: once coffee beans are ground in advance, there is no need to rest them, because the pressure generated by carbon dioxide inside the packaging during transport can also make the coffee flavor rounder, so you can immediately brew a cup and enjoy it upon receiving the ground coffee. However, ground coffee must be brewed promptly, because after contact with air it oxidizes quickly, the flavor dissipates at an accelerated rate, and quality declines accordingly. Therefore, Front Street recommends buying whole beans and grinding fresh right before brewing, so you can better taste the coffee's flavor.

For professional coffee knowledge exchange and more coffee bean information, please follow Coffee Workshop (WeChat public account: cafe_style).

For more specialty coffee beans, please add the private WeChat of Front Street Coffee: qjcoffeex.

The above content is compiled by CoffeeHunters, a coffee news website.