A machine for processing liquid or semi-liquid food products, comprising: - a container for processing liquid or semi-liquid food products and provided with walls (2A, 2B) and an outlet; - a stirrer, made at least partly from ferromagnetic material and disposed inside the processing container, the stirrer rotating about a mixing axis to mix the product to be dispensed; - an actuator connected to the stirrer to set the stirrer in rotation about the mixing axis, the machine further comprising an induction element comprising one or more wound conductors for generating a magnetic field when an electric current flows through them, the induction element being disposed outside the processing container so that the magnetic field generated passes through at least part of the walls (2A, 2B) of the processing container to reach the stirrer and causes heating by magnetic induction, wherein the machine comprises a control unit and an electrical power regulating unit driven by the control unit and connected to the induction element to provide the conductors with electrical power, the power regulating unit is configured to send electrical power to the conductors according to a plurality of different power levels, at least one of the power levels comprising the transmission of power in a pulsed mode, wherein the stirrer comprises a first portion, which is made from a first, ferromagnetic material, and a second portion, which is made from a different material, the first portion of the stirrer is made at least partly from ferritic steel and wherein the first portion of the stirrer has an austenitic steel coating and wherein the mixing axis is vertical and the induction element is disposed outside a bottom of the processing container and wherein the electrical power regulating unit comprises an inverter configured to regulate a frequency of the electrical voltage to the conductors as a function of the commands received from the control unit and wherein the power regulating unit comprises an ac to dc voltage conversion module that is connected to the input of the inverter to supply dc voltage thereto. - a container for processing liquid or semi-liquid food products and provided with walls (2A, 2B) and an outlet; - a stirrer, made at least partly from ferromagnetic material and disposed inside the processing container, the stirrer rotating about a mixing axis to mix the product to be dispensed; - an actuator connected to the stirrer to set the stirrer in rotation about the mixing axis, the machine further comprising an induction element comprising one or more wound conductors for generating a magnetic field when an electric current flows through them, the induction element being disposed outside the processing container so that the magnetic field generated passes through at least part of the walls (2A, 2B) of the processing container to reach the stirrer and causes heating by magnetic induction, wherein the machine comprises a control unit and an electrical power regulating unit driven by the control unit and connected to the induction element to provide the conductors with electrical power, the power regulating unit is configured to send electrical power to the conductors according to a plurality of different power levels, at least one of the power levels comprising the transmission of power in a pulsed mode, wherein the stirrer comprises a first portion, which is made from a first, ferromagnetic material, and a second portion, which is made from a different material, the first portion of the stirrer is made at least partly from ferritic steel and wherein the first portion of the stirrer has an austenitic steel coating and wherein the mixing axis is vertical and the induction element is disposed outside a bottom of the processing container and wherein the electrical power regulating unit comprises an inverter configured to regulate a frequency of the electrical voltage to the conductors as a function of the commands received from the control unit and wherein the power regulating unit comprises an ac to dc voltage conversion module that is connected to the input of the inverter to supply dc voltage thereto.