Irn-Bru – made from girders – has a new limited-edition drink based on a 118 years’ old recipe.
Irn-Bru 1901 is centred on the original mix.
Its ingredients were found a handwritten book buried deep in the company’s archives.
Robin Barr, who unearthed the recipe, revealed that IRN-BRU’s “secret flavour essence” will not change.
It will go on sale in December in its original style 75cl glass bottles and will cost about £2.
Mr Barr added: “The 1901 recipe has aged beautifully over the last 118 years.
“For a limited time, we’ll be producing a premium ‘old and unimproved’ Irn-Bru 1901 just as it was enjoyed by our first fans.
“This is Irn-Bru as you’ve never tasted it.
“It’s a chance to enjoy a unique and authentic piece of Scottish history – but don’t hang about, we don’t think it will be around for long.”
Irn-Bru – dubbed Scotland’s second national drink after whisky – is made at Cumbernauld, North Lanarkshire.