I don't like vinegar much either, but vinegar in drinks does have a certain tradition e.g.

https://en.wikipedia.org/wiki/Posca

Soadly is getting popular in Australia as an alternative to sugar / artificial sweeteners soadas. Most use vinegar: https://www.remedydrinks.com/collections/sodaly

I'm hoping Irn-Bru will come out with Fish-n-Chips Soda with a strong vinegar finish!

In the mean time, does anyone know the formula for traditional Irn-Bru? How do you get the girders to dissolve into the syrup?

RARE Irn-Bru Advertising Poster/Calendar 1992 Demand Going to be Wee Bit Heavier

https://www.ebay.co.uk/itm/374619031624

Irn Bru - "Made in Scotland from Girders" - Drilled Hole

https://www.youtube.com/watch?v=JoVfy_q9IFc

Irn Bru Advert - "Made in Scotland from Girders" - Steam Roller

https://www.youtube.com/watch?v=SD3LippIN40

Irn Bru Advert: Shipyard

https://www.youtube.com/watch?v=dBjYfe-QIBg

IRN-BRU Snowman Advert

https://www.youtube.com/watch?v=4yZOab5gl-4

IRN-BRU Snowman - The Sequel

https://www.youtube.com/watch?v=z8WBStu4STY

ROYALS: The Queen and Prince William visit the Irn-Bru factory | 5 News

https://www.youtube.com/watch?v=QU-0n1m-2OE

At 1:08 they hold up a precious bottle of pure secret Irn-Bru Essence. How can I get me some of that?