By roasting, the grain gets a more or less brown color according to the time and the roasting mode, which varies according to the size of the grain and the quality of the coffee you want to obtain, different according to your consumer needs and the use that must be done.
Green coffee is toasted at temperatures between 200 and 230 ° C, while being stirred continually for a time ranging from 18 to 23 minutes.
Roasting is a very delicate stage because the different qualities of coffee used in the blends should keep the different characteristics as much as possible. To achieve a perfect and homogenous “cooking” of each different quality it is necessary to toast individual raw separately, only after mixing (“separate toasting”).
This method offers more qualitatively results, however only a few roasting company still make use of it as the work is longer and more complex.