Abstract: A coffee roasting apparatus is disclosed that comprises a compartment for holding coffee beans, a heating arrangement for directing a heated air flow through the compartment during a roasting process of the coffee beans, a particulate matter sensor for detecting a peak amount of particulate matter released by the coffee beans, a timer for determining an amount of time lapsed from a start of the roasting process until the detection of the peak amount, and a controller arranged to control the heating arrangement. The controller is adapted to select a defined control time as a function of the lapsed amount of time and apply the defined control time to the heating arrangement after first cracking of the coffee beans to complete the roasting process. A coffee brewing apparatus including such a coffee roasting apparatus and a method of controlling such a coffee roasting apparatus are also disclosed.