Diedrich IR-5 Analysis by Doris Garrido
We are starting the year with both delicate and tasty coffees, now with a Colombia Pink Bourbon. I have roasted a co-fermented coffees from Edwin Noreña, a Colombian coffee producer who make incredible tasting coffees with amazing fermentation techniques.
I looked for around 10 minutes of roast, a little long drying stage with air, long yellowing, and a minute and a half of development.
Charge the coffee at 400.9F with 50% airflow. I highly recommend starting with air, as I notice it will help with the finished taste. This was my first batch of the day and being this a low-density coffee, I wait to read the turning point temperature to decide how much gas to apply.
I was expecting to run a little fast since I warmed the drum for about 50 minutes; usually, I get it a little extra hot. The turning point was marked at 182.2F and I decided to add 70% of the gas. My gas inputs were simple, just leave the gas for 4 1/2 minutes and drop to the lowest flame which is 30%. The yellowing started at 303F, and the roast went smoothly during Maillard, reaching the first crack with a rate of change of 14 degrees per minute. I forgot to mark the 100% air at first crack but that is my automatic next move to clean out the drum from smoke during development, but I am sure I did it. I got a nice development of 1:22 and dropped the coffee with a temperature marking 400.9F exactly my charge temperature.
Nailed the roasting plan! As soon I ground some beans to run the color track the aroma was showing great. On the cupping table coffee was well-rounded, with the clean herbal of the hops, chamomile, rose, and black tea. On the sweetness, hard candy, bubble gum raspberry jam, and cherry cola, on acidity I was having a tasty cranberry juice and a sweet pink grapefruit. As is noticed by the tasting notes, the complexity of flavors is surrounded by the excellent quality of the beans, it is a well-processed co-fermented coffee, and its deliciousness starts form the hot cup, and you can enjoy it till long after cools down. Edwing Noreña did it again!
