One of the most driven coffee professionals I’ve had the honor of meeting is Reza Kosar. In addition to being the first Iranian to become a licensed Q Grader, Reza is a talented coffee roaster with an insatiable curiosity in coffee science. He recently posed an interesting question on his Instagram account: what determines the color of brewed coffee? Which raises a second question, what effect does color have on flavor? We chimed in with what we thought was the right answer, but it turns out Reza had taken a deep dive into the subject and has graciously offered to share his research with us.
Roast
The roasting process leads to the formation of the characteristic coffee aroma and dark-colored
compounds. …
Indianapolis, like most Midwestern cities, is modest but proud. Proud of its history, its speedway, Peyton Manning. I think the same could be said about the city’s coffee community, especially the roasters. None of Indy’s roasters are nationally known, but they don’t need to be. They’re content to roll up their shirtsleeves, put their hands to the plow, and get to work. A growing part of the Indy roasting scene is husband and wife duo Andy and Sarah Hassler, who roast coffee out of their garage under the name of 
There are few jobs in the coffee industry as romantic or mysterious as roaster. Traditionally, the tradecraft of the making-coffee darker arts has been a closely guarded secret, passed on from roaster to roaster in old fashioned apprenticeships. Other than 
