What is the Ideal Coffee-to-Water Ratio for Blue Mountain Coffee? A Guide to Pour-Over Brewing Ratios

FrontStreet Coffee's Jamaica Blue Mountain Coffee Brewing Parameters

The Blue Mountains sit in the eastern part of the island of Jamaica. The range takes its name from clear days when the sun strikes the azure sea surface and the peaks reflect the brilliant blue light of the water, all of it ringed by the Caribbean Sea. The highest peak of Blue Mountain reaches an altitude of 2256 meters, making it the tallest in the Caribbean region and a well-known tourist destination. The area lies in a seismic zone, with fertile volcanic soil, clean, unpolluted air, and a humid climate that brings fog and rain throughout the year.

Jamaica Blue Mountain Coffee is a globally protected certification mark, which means only coffee certified by the Jamaica Coffee Industry Board can carry the name. It comes from a recognized growing area within Jamaica's Blue Mountain region, and its cultivation is supervised by the Jamaica Coffee Industry Board.

After Japan helped Jamaica's coffee industry recover from the typhoons that devastated it in 1969, Japan was granted the right of first purchase on Blue Mountain Coffee as a gesture of gratitude. In 1992, Jamaica sold 688 tons of Blue Mountain Coffee to Japan. Since the rest of the world could obtain only 10% of the crop, other regions faced a shortage. That remaining 10% is what circulates on the market. Measured in the internationally used oak barrels of 70 kg, it comes to a pitiful 3,500 barrels in total. As a result, very few people get to drink genuine, pure Blue Mountain Coffee each year.

Daily Brewing:

Filter cup: a V60 filter cup or a Kono filter cup both work well.

Parameters: 15g of coffee grounds, water temperature 88°C, grind size BG-6S, water-to-coffee ratio close to 1:15, total time around 1:50.

Technique: use 25-30g of water for the bloom and let it sit for 30 seconds; pour to 120g and stop; keep the water stream vertical, with a small flow and a slow circular motion; for the second pour, go to 225g with a slightly faster flow and circling speed to keep the grounds from clogging the filter and over-extracting.

Other Extraction Suggestions:

French Press: grind setting 3.5-4, water temperature 90°C

Siphon: grind setting 4, water temperature 89°C

AeroPress: grind setting 2.5, water temperature 88°C

FrontStreet Coffee Recommendation

To put these ratios to work, start with FrontStreet Jamaica Blue Mountain No.1, a balanced cup of cream, caramel, chocolate, and nuts with honey and a light fruit note. For a pour-over, use a 1:15 to 1:16 ratio, water at 85-88°C, and a medium-coarse grind. If you prefer a Kono dripper, brew 15g at 1:15 with water at 87-88°C and a white-sugar grind, resting the beans 4-7 days off roast and pouring in three stages: a 30g bloom for 30 seconds, then to 120g, then to 225g.