Method of roasting

A method of roasting coffee beans with a roasting apparatus, the roasting apparatus comprising:

• a chamber configured to contain coffee beans,
• a heating device configured to supply hot air to the chamber,
• at least one temperature probe to measure a temperature of hot air supplied by the heating device,
• a control system configured to control the heating device and configured to reproduce roasting recipes, the roasting recipes representing a temperature to be applied at discrete successive times, respectively, the control of the heating device implementing a feedback loop regulation based on the temperature measured by the at least one temperature probe,
• wherein, before implementing a new operation of roasting coffee beans with the roasting apparatus by reproducing the roasting recipes, the roasting recipes providing at least a set of points defined with one specific master roasting apparatus, the feedback loop regulation is adjusted according to,
• the steps of:
• supplying at least one of a plurality of conditions of the new operation of roasting,
• comparing each supplied condition of the new operation of roasting with a corresponding condition of reference as originally applied when defining the roasting recipes with the one specific master roasting apparatus,
• if a difference is identified between the supplied condition of the new operation of roasting and the corresponding condition of reference, then:
• based on the identified difference, receiving a corresponding pre-determined correction specific to a nature and a difference of the condition of roasting with the corresponding condition of reference, and
• applying the corresponding pre-determined correction to at least one of the temperatures of the roasting recipes to be reproduced by the roasting apparatus.