irn bru was origionally formulated in a skip of sheet steel off cuts,rusty rivets and indeed a girder thrown in there by some dirty railway radge employee in the clyde ship yards.setting the whole irn bru process in motion.
then…one day it rained acid emulsion after the chernobyl cloud traveled to the ship yard and droped its acid rain load, not only giving the sweaty ship workers their first real shower but making the origional irn bru recipe.
was a genuine act of god and indeed mixed with vodka (glens of course) makes what we alchi scots call "wreck to hoose juice"
Its forged our nation. ya bass.