Do you have promite/marmite over there? It's kind of the same. It's a yeast extract, most of the yeast is spent yeast from the large breweries over here. We also drink MILO from a very early age, which is a malt extract, basically everything we do from when we're born is to ready us for drinking beer our whole lives.
I searched for 'american vegemite' and this is what came up first;
For a guy that gobbles cock, he sure is a fussy eater.
The dumbest part is that KRAFT is an American company.