Made from a by-product of the beer brewing process, yeast extract, Marmite is a popular UK sandwich and toast spread similar to Australia's Vegemite.
The Marmite Food Extract Company was formed in Burton-on-Trent?, Staffordshire?, England, in 1902.
Marmite is the richest 'natural' source of the [vitamin B]? complex, if one can call a product resembling pitch natural.
Advertised variously as "The Growing Up Spread" and "My Mate. Marmite", Marmite tends to be an acquired taste, with no middle ground. People tend to love it or hate it.