compressor 7 which is actuated by an electric motor 8 the source of compressed air allows the production and supply of compressed air the directing pipe 3 directs a jet of vapour and compressed air through the open end 4 from the first pipe 6 and the second pipe 9 respectively into the container 5 the directing means 3 in the construction illustrated is preferably a pipe which can be orientated as desired optionally a flexible pipe so as to facilitate its insertion into the container 5 for example a jug and to allow complete immersion of the open end 4 in the milk to be heated and whipped the heating and whipping of the milk are controlled by a control unit 10 which is connected to the vapour cut off valve 11 the motor 8 of the pump 7 for the air and in addition a temperature transducer 12 which is connected to the immersible end 4 of the directing means 3 and which can detect the temperature of the milk when the end 4 is immersed in the milk the temperature transducer 12 is advantageously an element which is sensitive to temperature such as for example a thermocouple a thermoresistor and the like whose output magnitude at the input to the control unit 10 is by nature electrical in a preferable but not exclusive manner the control unit 10 comprises in a simplified form thereof a programmable cpu not illustrated a display 13 and a series of push buttons 14 which are connected to the cpu the unit 10 is supplied by a source of electrical power which is not shown in the figures the cpu associates a series of operations to be carried out with each push button 14 the operations.