Flavour enhancers are commonly added to commercially produced food products (eg. frozen dinners, instant soups, snackfoods) to make them taste more 'savoury'.
The commonly used flavour enhancers are:
Australian
... but never got beyond the prototype stage. The company went bankrupt in 1995.
In 1998 the Bugatti name was bought by VAG, but by mid-2002 only a handful of prototypes ...