Irn-Bru is a bright orange carbonated soft drink made in Scotland, and it occupies a place in Scottish life somewhere between a beverage and a national emblem.
What it tastes like
Nobody has ever satisfactorily described it. The usual attempts are bubblegum, cream soda, citrus and something faintly metallic, and none of them is right. The recipe is a closely guarded secret known to only a handful of people, though it does genuinely contain ammonium ferric citrate — an iron compound, which is where the name comes from.
The name
Launched in 1901 by A.G. Barr of Glasgow as Iron Brew. The spelling changed in 1946 when new labelling regulations required product descriptions to be literally accurate — and since the drink is not brewed, “Iron Brew” was no longer permissible. The phonetic respelling as Irn-Bru solved the problem and is now the more famous form.
The long-running advertising slogan, “made in Scotland from girders”, leaned into the iron entirely.
Beating Coca-Cola
For decades Irn-Bru was the best-selling soft drink in Scotland, ahead of Coca-Cola — a distinction shared by very few local brands anywhere in the world. Coke has since taken the top spot in overall volume, but Irn-Bru remains extraordinarily dominant for a regional product, and A.G. Barr is still an independent Scottish company.
The hangover cure
Irn-Bru’s single most cited use. On 1 January in Scotland, sales are enormous, and it is drunk cold and flat by a substantial proportion of the population as the recognised remedy for the previous night. The company has never made a medical claim and has never needed to.
The sugar tax row
In 2018, ahead of the UK’s sugar levy, A.G. Barr reduced the sugar content of Irn-Bru by more than half. The reaction in Scotland was disproportionate and entirely sincere: petitions, panic-buying of the original recipe, and cases of old stock selling for absurd sums online.
The full-sugar version, Irn-Bru 1901, was later reintroduced in limited runs, which suggests the company took the point.
The advertising
Irn-Bru’s advertising is famously irreverent and has been banned more than once. Campaigns have featured a snowman dropping a boy from a great height to steal his can, a phone conversation between a boy and his mother’s new boyfriend that cannot be described here, and a series of Christmas adverts that Scottish viewers now expect as a fixture.
The humour is specifically Scottish — dry, dark and slightly aggressive — and is part of why the brand is held in such affection.
Getting hold of it
Available across the UK, in Scottish and British shops abroad, and increasingly in international sections of supermarkets. Note that some export versions use different sweeteners and colourings — the American version was reformulated to remove Ponceau 4R, a colouring not permitted there — so it does not taste quite the same.