There is provided a device for the aeration of food products comprising a mixing head having at least one set of rotor-stator combinations. Each rotor-stator combination comprises a rotor and a stator with complementary toothed rims which are orientated in opposition in the axial direction. An inlet cover is provided having a product inlet opening for receiving a product to be aerated and a gas injector arranged thereon and traversing the inlet cover such that the head of the gas injector is located in a headspace defined by the inlet cover and a first rotor-stator set.
