A mouthpiece (202) for an apparatus for generating an inhalable medium is disclosed. The mouthpiece defines an aperture extending from a first opening (224) at a first end of the mouthpiece to a second opening (236) at an opposing end of the mouthpiece. The mouthpiece is arranged to receive in the aperture through the first opening a flavour element for imparting a flavour to a flow of at least one of a vapour and an aerosol that passes through the mouthpiece in use. The aperture has a first radial dimension towards the first opening, and a second radial dimension towards the second opening, wherein the second radial dimension is smaller than the first radial dimension.
