New IRN-BRU Xtra. Xtra taste. No sugar. A new IRN-BRU which is big on taste and has no sugar. We've added even more of the unique IRN-BRU taste made to our secret recipe. New IRN-BRU Xtra has no calories and all of the sugar taken out. BRU'd In Scotland Since 1901 To A Secret Recipe Of 32 Flavours With A Spirit That's As Bold As Its Taste. You Can't Describe It, Because There's Nothing Like It. The Strong Soft Drink An indescribable brand with a phenomenal taste. Throughout the years, IRN-BRU's irreverent and humorous advertising has continued to entertain and refresh fans up and down the country.