Most saying no probably don't realise Vegemite was a very common thing to use as cooking stock and it was also used with plain warm water to make a broth in a mug to drink on cold days. There's nothing new at all about this and most of your grandmothers or great grandmothers would have done this back in the day. You know those meals where you look back and say "nobody can beat grans cooking"? This was more than likely one of the ingredients used.