Many years ago (August 1984) I met a construction worker who had just come back from North Africa, specifically from a country where the sale and/or consumption of alcohol was frowned upon. Very severely frowned upon, in fact. He said that sales of Marmite were huge among the expat community, not because they ate lots of toast, but because it was used for the illicit production of hooch. I wasn't sure whether I believed him, but it seems there might have been some substance to his tale.