A coffee roasting apparatus (100) is disclosed that comprises a compartment (110) for holding coffee beans (10)； a roasting element (140) for directing a heated air flow through said compartment； a particulate matter sensor (120) for detecting a peak amount of particulate matter in said air flow； and a controller (130) arranged to control said roasting element. The controller is adapted to select a defined control time for said roasting element as a function of an amount of time lapsed from the start of the roasting process until the detection of said peak amount； and apply the defined control time to said roasting element after first cracking of the coffee beans to complete the roasting of the coffee beans in order to obtain a consistent roasting result. A coffee brewing apparatus including such a coffee roasting apparatus and a method of controlling such a coffee roasting apparatus are also disclosed.
