CO2 Fermentation Elevates Natural-Process Coffee Scores in Colombia
This might just change your routine: A sealed container and a dose of carbon dioxide could be the secret to elevating natural-process coffee to new heights. A Colombian study reveals that CO2-assisted fermentation outperformed traditional methods, pushing natural-process coffees into the specialty tier. Researchers from SENA and Universidad del Valle tested five fermentation techniques on the same coffee lot, comparing open-air and CO2-sealed systems. The results? A 24-hour CO2 treatment scored 86.90 on the SCA’s 100-point scale—nearly 5 points higher than the unfermented control. The study’s brilliance lies in its practicality. While fermentation research often leans on lab-controlled settings, this…










