Ummm... I know what both Marmite and Vegemite are. Usually British folks take offense at Vegemite (an Australian product), and Australians take offense at Marmite (a British product).
Vegemite is a yeast type of product. Nasty brown stuff. Not bad actually, on toast. I developed a taste for it prior to a visit from my Aussie galpal over a year ago.
You should have seen her face, as I - proud that I could eat Vegemite - proceeded to dip my knife into the jar - and spread it generously on the toast.
She kinda went blubbered a bit - waved her hands in mid-air - and said "Nooooo! You don't eat it like that!" (I had no idea what she was talking about.)
She then proceeded to demonstrate for me. It turns out that you are supposed to put only a teeny little dab onto toast, and scrub the heck outta the toast - as you attempt to spread the Vegemite all over it.
I had learned to take it 'full-strength'. She DID say that there would be many an Aussie male that would be proud of me for eating it that strong.
How should _I_ know? <shrug>
Regards,
Jim TX
P.S. Being proud to be trying something new, I had located Marmite locally and purchased it. Not cheap either. When she found out (she was still in Australia at this time), and promptly made me throw it out. Hence my earlier remarks. They both taste the same to me. <shrug>