Apparatus and methods for generating an inhalable medium are disclosed. An apparatus (1) comprises a container (132, 232, 332, 432) for holding a liquid (118, 218, 318, 418), a heater (130, 230, 330, 430, 630, 730) for volatilising liquid held in the container to generate a flow of at least one of a vapour and an aerosol in use, and a receptacle (114, 214, 314, 414, 614, 714) for receiving material (124, 224, 324, 424, 624, 724a, 724b). The receptacle is located adjacent to the heater such that in use, material received in the receptacle is heated by the heater. One or more constituents of material received in the receptacle in use are mixed with the flow of at least one of a vapour and an aerosol in use to produce the inhalable medium.