Diedrich IR5 Analysis by Doris Garrido
After roasting a couple of co-fermented coffees over the past days, I felt confident in my approach to this next one: a Carbonic Maceration, Raspberry Co-fermented Colombia from Edwin Norena. And I would say, it ended like a true cherry bomb in a cup.
I started the roast with a slightly low charge temperature (390F), adding gas at 100% within the first minute. From there, simply observe the coffee absorbing the heat and maintaining full gas for four minutes, dropping it at the five minutes mark. At that point, the coffee was beginning to change color, so I marked it and turned off the burners leaving only the pilot for about a minute. I wanted to slow things down and allow the sugars to caramelize gently. For this co-fermented Caturra, I looked to slow down the finish as I was afraid to take over abruptly, so I immediately added the full airflow.
I marked the first crack at 378F, although I started noticing changes in the coffee about 10 seconds earlier (without any audible pops), so I took that time into account to avoid overdevelopment. After 30 seconds of post-crack development, the cracking became livelier, and I dropped the coffee once I saw the perfect brown color I was aiming for, and with 1:25 seconds I thought it was enough.
ColorTrack readings showed a ground value of 56. My usual target is 54 or under, but conjuring this coffee’s intense processing, I was hopeful the cup would land beautifully.
The roast resulted in the cupping table in a silky and deliciously sweet profile. Although it’s a Raspberry co-fermented, the flavor leaned entirely toward cherry cola, with sweet notes of vanilla, a touch of buttery molasses, cherry jam, and bubble gum. It did not taste overdeveloped as it maintained a fresh cherry taste with extremely high aromatics.