Jamaica Blue Mountain Grade 1 Coffee Origin Introduction, Green Bean Grading, and Jamaica Blue Mountain Estate Beans

FrontStreet Coffee: Jamaica Blue Mountain Origin Introduction and Green Bean Grading

FrontStreet Coffee's Jamaica Blue Mountain coffee is not sold under the label "Grade 1"—instead, it uses the widely known Blue Mountain No. 1 as its grade name.

Official Jamaica Blue Mountain Coffee Grading

Based on the altitude of the growing mountains and the size of the green beans, Blue Mountain coffee is divided into three designations: Jamaica Blue Mountain, Jamaica High Mountain, and Jamaica Prime Washed. Ordinary Jamaican coffee, meanwhile, is simply called "Jamaica Coffee"—grown mainly in the middle and low mountain areas and belonging to the Jamaica Prime Washed series. Exports of Jamaican Blue Mountain beans are further divided into 7 grades:

The Seven Grades of Jamaica Blue Mountain Coffee

Blue Mountain No. 1: 96% of the beans must be screen size 17/18, with no more than 2% defective beans.

Blue Mountain No. 2: 96% of the beans must be screen size 16, with no more than 2% defective beans.

Blue Mountain No. 3: 96% of the beans must be screen size 15, with no more than 2% defective beans.

Blue Mountain Peaberry: 96% of the beans must be screen size 10, single round peaberries, with no more than 2% defective beans.

Blue Mountain Triage: A blend of Blue Mountain No. 1, 2, and 3 beans with a few slightly defective ones that do not affect cup quality.

Blue Mountain Fine Beans: Beans with screen size below 15, with no more than 2% defective beans. This grade is sold only as samples, with prices set by demand.

Blue Mountain Triage Peaberry: A blend of Blue Mountain peaberries with a few slight defects but excellent cup quality, containing no more than 4% defective beans.

FrontStreet Coffee Recommendation

Because genuine Blue Mountain is scarce—the entire Jamaican Blue Mountain region produces under 2,500 tons a year, and Japan has historically bought more than seventy percent of it—grading standards are enforced with unusual strictness, as the seven export grades above show. At the top of that pyramid sits Blue Mountain No. 1, the grade FrontStreet Coffee carries, whose beans must meet the 17/18 screen size with no more than 2% defects and display a balance of acidity, sweetness, bitterness, body, and aroma that lesser grades cannot match.

FrontStreet Coffee's Blue Mountain No. 1 comes from Clifton Estate, where coffee has been grown since around 1750 at an average of 4,300 feet (1,310.64 meters). Authenticity is easy to verify: the estate's certification documents and origin proof are on display, along with stacks of the traditional wooden shipping barrels—15, 45, and 70 kilogram barrels, each one itself a hallmark of genuine Blue Mountain. Genuine green beans are also recognizable on sight: uniform and plump, slightly upturned at both ends, and green in color.

In the cup, FrontStreet Coffee's Blue Mountain No. 1 is the benchmark of balance: no aggressive fruit acidity, no heavy roasty bitterness—just cream, caramel, chocolate, nuts, honey, and a light fruit tone in perfect accord, with a soft rounded entry, rich mid-palate sweetness, and a clean, lingering finish. FrontStreet Coffee roasts it medium-dark and ships beans within 5 days of roasting; rest them 4–7 days from the roast date, then brew in a Kono dripper with 15g of coffee at white-sugar grind, 87–88°C water, and a 1:15 ratio in three stages—30g bloom for 30 seconds, pour to 120g, then to 225g. The result is clean, complex, and gentle, with strong body and a long, fruit-toned finish: a legend whose appeal has endured for decades, whether as a daily specialty cup or a premium gift.