The roasting of whole beans is the traditional cocoa roasting method and is preferred by numerous chocolate manufacturers due to the good aroma development.
During the roasting process, the shell separates from the cocoa nibs, so that crushing and winnowing is more efficient.
Batch roasters achieve a very good intermixture by means of rotation. The product is elevated with blades and falls through the current of hot air with simultaneous heat transfer being ensured through contact with the hot cylinder wall.