Those familiar with the Scottish soft drink Irn-Bru may be familiar with the marketing slogan: "It's made of girders." This is due to the drink's taste which some describe as having a metallic edge.
The actual recipe remains a secret, however there is a large range of imitation drinks and unbranded "iron brew" flavoured products (e.g. syrups, confectionery, etc.) with the same taste, so the flavour profile must be fairly widespread knowledge within the flavouring industry.
I've searched but unlike OpenCola there are no copycat or unofficial recipes to make an iron brew flavoured drink at home.
So does anyone know... what are the flavours which go into making an iron brew taste?