There is provided a method of controlling aerosol production in an aerosol- generating device, the device comprising a powered aerosol generating element, a flow channel configured to allow a flow of gas past the aerosol generating element, and a flow sensor configured to detect the air flow in the flow channel, comprising the steps of: determining a value of a first parameter related to a change in flow rate； and reducing a supply of power to the aerosol generating element depending on a result of a comparison between the value of the first parameter and a threshold value wherein the first parameter is derived from a combination of a second parameter that is a measure of a flow rate detected by the flow sensor and a third parameter related to the flow rate, and wherein the third parameter is temperature, power supplied to the aerosol generating element, a maximum detected flow rate, or a rate of change of flow rate, or is derived from a combination of two or more of temperature, power supplied to the aerosol generating element, a maximum detected flow rate, and a rate of change of flow rate. The invention provides a method of controlling aerosol production, and in particular reducing or suspending aerosol production, based not simply on a detected flow rate, but on another measure indicative of the evolution of the flow characteristics.Se proporciona un método para controlar la producción de aerosol en un dispositivo generador de aerosol, el dispositivo comprende un elemento generador de aerosol energizado, un canal de flujo configurado para permitir un flujo de gas más allá del elemento generador de aerosol y un sensor de flujo configurado para detectar el flujo de aire en el canal de flujo, que comprende los pasos de: determinar un valor de un primer parámetro relacionado con un cambio en la velocidad de flujo, y reducir el suministro de energía para el elemento generador de aerosol dependiendo del resultado de la comparación entre el valor del primer parámetro y
