Teacher's comment reads:
Vegemite, for those that don't know, should be spread sparingly on toast (or bread, or croissants, or whatever you like). It's an Aussie thing. In the UK they have Marmite, which is similar (but they are not interchangeable). Thankfully "iSnack 2.0" is no longer a thing (not here, anyway; maybe somewhere that serves Fosters might still think it's cool).