date:Jul 25, 2018
d. Final grading is based on size, growing location and altitude, harvesting, taste, and cup quality.
Step 7: Roasting
Beans are commonly roasted in large commercial roasters, placing beans in large metal cylinders and blowing hot air on them. The older method roasted over an electric, gas, or charcoal heater. Roasting gradually raises the temperature of the beans to between 180C and 230C. This triggers the release of steam, causing the beans to swell as well as darken in color and develop roa