A carrier, apparatus and method for making an aerosol precursor liquid suitable for aerosolized delivery by a device such as an electronic cigarette. A carrier is fluid permeable and comprises a tobacco-derived medium for carrying a functional component, the medium being configured to release the functional component into a fluid to provide an aerosol precursor liquid infused with the functional component. A method for mixing an aerosol precursor liquid for aerosolized delivery of a functional component by an aerosol delivery device comprises bringing the tobacco-derived medium carrying the functional component into contact with fluid and allowing the fluid to saturate the medium to thereby cause the medium to release the functional component into said fluid to form an aerosol precursor liquid infused with the functional component. A receptacle comprising a chamber for the carrier is provided for mixing the aerosol precursor liquid. Example functional components include nicotine and nicotine salts.