Irn-Bru la mot thuc uong co ga noi tieng cua hang Barrs, Scotland, Anh Quoc, đuoc sang che tai Glasgow nam 1901. Thuc uong nay co mau cam sang va co biet danh "Scotland's other national drink" (mot thuc uong quoc gia khac cua Scotland). "Thuc uong quoc gia" con lai la whisky. No đuoc mo ta la co vi trai cay ho cam chanh nhe diu.
Ten goi Irn-Bru theo loi ke bat nguon tu qua trinh xay lai Nha Ga trung tam Glasgow nam 1901 khi cac cong nhan cua William Beardmore and Company Steel Works o Glasgow uong qua nhieu bia đe chong lai con khat do moi truong lam viec nong buc khac nghiet. Cong ty can tim cho ho mot thuc uong khac thay cho bia va hang giai khat A.G. Barr đa gianh đuoc hop đong cung cap loai nuoc uong nay cho cac cong nhan. Thuc uong khong ten nay ve sau goi la Iron Brew hay viet tat la Irn-Bru (tam dich: chat luong sat) do co moi lien quan voi cac cong trinh sat thep.


Cong thuc Cong thuc cua Irn-Bru toi nay van la bi mat, cac hang giai khat canh tranh khac đa thu pha che Irn-Bru nhieu lan nhung khong thanh cong.
Cau khau hieu thuong mai noi tieng cua Irn-Bru la "Made in Scotland from girders" (Hang Scot-len lam tu... dam cau). Du khong thuc su lam tu dam cau hay xa nha, Irn-Bru van thuc su chua mot luong đang ke kim loai sat: nam 1999 nguoi ta đo đuoc nong đo 0.002% sat amoni citrate.
Nam 1999, Irn Bru đuoc đua vao Oxford Companion to Food cung voi trung ca muoi, chim cut va ca hoi nhu mot trong nhung thuc pham tuyet nhat the gioi va đuoc nhan xet la quan trong ca ve gia tri bieu tuong lan tinh giai khat.


Tai tro Irn-Bru la đon vi tai tro cho Scottish Football League, Scottish First Division, Scottish Second Division va the Scottish Third Division.


San xuat Irn-Bru va cac nuoc giai khat hieu Barr nhu Pineappleade, Cream Soda, Tizer, Red Kola, Barr Cola, va Limeade van con dang chai thuy tinh tai che 750 ml. Cac vo chai co the đuoc tra lai cho nha san xuat thong qua bat ky cua hang ban le ma ban cho ho.).

Irn-Bru va Diet Irn-Bru đuoc san xuat theo cac co sau:

150 ml: lon
250 ml: chai nhua
330 ml: lon
330 ml: chai thuy tinh
500 ml: lon đac biet co han (lon bu Rugby League)
500 ml: chai nhua
600 ml: chai nhua (Nga)
1 lit: chai nhua
1.25 lit: chai nhua (Australia, New Zealand, Russia, Scotland)
2 lit: chai nhua
2.5 lit: chai nhua (Scotland "Big Bru")
3 lit: chai nhua
355 ml: chai thuy tinh (in Canada)
750 ml: chai thuy tinh
5 lit: hop si - ro.
Thang 5/2007, Irn-Bru tai thiet ke toan bo chai va lon.


Anh huong Irn-Bru co the pha voi vodka va whisky.
Bao tang quoc gia Scotland, o Edinburgh, co mot buoi trung bay cac hien vat do cac ngoi sao chon; hiep si - dien vien Sean Connery chon mot thung Irn-Bru.
Nhom The Fratellis đa đac biet gioi thieu Irn-Bru trong chuyen luu dien nam 2008 cua minh va uong Irn-Bru suot thoi gian luu dien.
Elvis Costello nhac toi Irn-Bru trong "The St. Stephen's Day Murders," so sanh voi mot hon hop thuc uong Tia Maria va nhan xet "that drink made from girders".
Nhom The Orchids nhac toi Irn-Bru trong đia đon đau tay, "I've Got A Habit."
Nhom nhac Folk-n-Roll Scocha sang tac bai hat ve Irn-Bru trong album "ScattyBoo".Ten bai hat đo cung la "Irn Bru"


Phan bo Irn-Bru đuoc san xuat tai nam nha may o Nga va san xuat nhuong quyen tai Canada, My va tu 5/ 2008 tai Na Uy. Irn-Bru va cac san pham Barr khac đuoc xuat khau sang Tay Ban Nha, Ha Lan, Đuc, Gibraltar, Hy Lap, va Cyprus, cung nhu cac phan cua chau Phi va chau A. No đuoc ban o Ba Lan, Uc, Canada, Trung Đong, Na Uy, Đan Mach, My, cung nhu co ban o Ai Len, Malta, Bi va o Phan Lan tu nam 2005 va Ai Len nam 2011.


Chu thich Lien ket ngoai trang chinh thuc Irn-Bru 
web cua A.G. Barr cho san pham Irn Bru Luu tru ngay 27 thang 9 nam 2009 tai Wayback Machine
Irn-Bru My
Irn-Bru tai everything2
OFCOM A14 Advertising Report Luu tru ngay 14 thang 10 nam 2008 tai Wayback Machine – Page nam contains details of complaints regarding an Irn Bru advert
Irn-Bru gallery Luu tru ngay 10 thang 4 nam 2007 tai Wayback Machine
web quang ba Irn-Bru 32 Luu tru ngay 2 thang 1 nam 2014 tai Wayback Machine
web quang ba Diet Irn-Bru  Luu tru ngay 14 thang 10 nam 2017 tai Wayback Machine


Đoc them Davidson, Alan. Oxford Companion to Food (1999), "Irn-Bru", p. 407.