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A Comprehensive Interpretation of the Origin Grading System and Flavor Characteristics of Jamaican Blue Mountain Coffee Beans

July 16, 2014
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Blue Mountain Coffee is recognized as one of the world's top coffees, and this is inextricably linked to its exceptional natural conditions and the Jamaican government's almost stringent industry controls. The Blue Mountain range lies in eastern Jamaica, where the azure waters of the Caribbean reflect off the peaks, giving the mountains their name. The highest peak stands at 2,256 meters, with a cool, misty climate, abundant rainfall, and fertile volcanic soil providing an ideal growing environment for coffee. In the mid-20th century, due to inconsistent export quality, Canada once refused to accept Blue Mountain Coffee, prompting Jamaica to establish the Coffee Industry Board (CIB) in 1948 and build a strict quality standard and certification system. Blue Mountain Coffee is classified by screen size into No.1 through No.3 and Peaberry grades, and the government has also designated specific growing regions and approved processing facilities, with dedicated supervision from harvesting, fermentation, and drying to barrel packaging. This article will systematically outline the classification, grading standards, and unique craftsmanship of Blue Mountain Coffee, taking you on an in-depth look at this legendary coffee.

The reason Blue Mountain Coffee has earned its place among the world's universally recognized top coffees is inseparable from its unique growing conditions and the strict regulatory system implemented by the Jamaican government.

The Blue Mountain range is located in the eastern part of the island of Jamaica, surrounded by the Caribbean Sea. On clear days, sunlight strikes the sea surface directly, and the azure shimmer reflects onto the mountaintops, giving the entire peak a captivating blue glow—hence the name Blue Mountain. Its main peak rises to 2,256 meters, making it not only the highest point in the Caribbean region but also a renowned tourist destination. The local climate is moderate, the volcanic soil is nutrient-rich, the air is clean and pollution-free, and the humidity is high with year-round mist and abundant rainfall. Together, these factors create nearly perfect conditions for coffee cultivation and give Blue Mountain Coffee its distinctive flavor.

In the past, the lack of unified quality standards led to inconsistent export quality of Blue Mountain Coffee, severely damaging its international reputation. By 1943, Canada—then the largest importer of Blue Mountain Coffee—even refused to continue purchasing it. To reverse this situation, the Jamaican government introduced multiple measures to overhaul the coffee industry and in 1948 specifically established the Jamaica Coffee Industry Board (CIB). This body is responsible for setting quality standards for Jamaican coffee and overseeing their enforcement. Every batch of Blue Mountain Coffee beans destined for export undergoes sample testing by quality supervision experts, and only those that meet the standards can obtain a quality certification certificate issued by the board.

Jamaican coffee is broadly divided into three categories:

Blue Mountain Coffee

Jamaica High Mountain Supreme Coffee Beans

Jamaica Prime Washed

The Jamaican government's definition of Blue Mountain Coffee is extremely strict:

The coffee must be grown within the Blue Mountain region designated by the Coffee Board, processed by government-authorized processing facilities, and government-certified. The so-called Blue Mountain region is specifically limited to a dozen or so districts in the Blue Mountain range, mainly distributed around five peaks: John Crow, St. John's Peak, Mossman's Peak, High Peak, and Blue Mountain Peak. Currently, there are only six government-designated Blue Mountain Coffee processing (roasting) facilities: WALLENFORD, Mavis Bank Central Factory (M.B.C.E), Blue Mountain Coffee Cooperative Factory (M.H.C.C.T.), Portland Blue Mountain Coffee Cooperative Factory (P.X.X.S.H.), St. John's Peak, and J.A.S.

Blue Mountain Coffee is classified by export grade into: No.1, No.2, No.3, and Peaberry.

The specific grading standards are:

No.1—17/18 screen, defective beans not exceeding 2%;

No.2—16/17 screen, defective beans not exceeding 2%;

No.3—15/16 screen, defective beans not exceeding 2%;

Peaberry—10MS, defective beans not exceeding 2%;

Additional note: Coffee typically grown at elevations between 457 and 1,524 meters is called High Mountain Supreme, while that grown between 274 and 457 meters is classified as Jamaica Prime Washed. Jamaican coffee was first cultivated in the hills around Saint Andrew before gradually expanding to the Blue Mountain region. Saint Andrew remains a major coffee-producing area in Jamaica outside of the Blue Mountains, and its coffee has a style similar to Blue Mountain with comparable quality, but because it is not grown on the Blue Mountains, it is sold under the name Jamaica Prime Washed. Its flavor is rich and mellow, with a balanced and smooth acidity, sweetness, and bitterness, and it commands a high market price, equally recognized as an excellent product.

Blue Mountain Coffee is subject to strict controls at every stage of production.

The coffee tree variety is primarily the arabica "Geisha High Bred" type, grown in mixed plantings. Seedlings must be cultivated in nurseries for about two years, and only organic fertilizers are used throughout the growing period. The harvest season runs from June to November each year, and all picking is done by hand. Because the coffee trees grow on steep slopes, harvesting is extremely difficult, and only experienced local female workers can manage it. Selecting just the right ripe cherries is crucial—underripe or overripe fruit will drag down coffee quality. Picked coffee cherries must be depulped the same day, followed by fermentation for 12 to 18 hours. Then comes washing and sorting. The subsequent drying step must be done on concrete patios or thick blankets until the beans' moisture content drops to 12% to 14%, after which they are transferred to dedicated warehouses for storage. Every step of green bean processing has dedicated personnel responsible for quality control. For the extremely precious Blue Mountain Coffee, the Jamaican government's packaging and shipping method is also unique—unlike other coffees shipped in 60 kg burlap bags, Blue Mountain Coffee is packaged and shipped in wooden barrels at a standard of 70 kg per barrel. Jamaica is also the last country in the world to still use traditional wooden barrel packaging for coffee shipment.

The images in order are:

1: Packaging of Blue Mountain beans

2: Blue Mountain Coffee trademark

3: Logo of the Blue Mountain Coffee Industry Board

4: Sample certificate

5: Trademarks of Blue Mountain Coffee and High Mountain Coffee

6: Map of Jamaica

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

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